Most frequently, you will see the word "tract" used in the expression "tract of land." A "tract of land" is a large piece of land of any kind. Hence, the best option among those provided is "expanse." Think of "expanse" as indicating an "expansive" piece of land. All of the other options pertain to this or that kind of land—inherited, only a field, etc. Only "expanse" captures the large size of a "tract" of land.

Perhaps you have heard the word "turbulence" in the context of flying. When an aircraft is experiencing bad winds mid-flight, the craft begins shaking, and the pilot will say that the plane is experiencing turbulence. This means that it is experiencing a disturbance. The word "turbulence" can apply to any kind of disturbance, not merely wind disturbances in a plane. It can also apply metaphorically to situations in which there are drastic unexpected changes to the normal state of things in a given field, e.g. "political turbulence" or "economic turbulence." Therefore, the best option is "upheaval," and not words like "aircraft," "gale," or "breeze."

A number of the incorrect options for this question try to get you to misuse your experiences at the dentist. If you have a cavity in one of your teeth, this likely occurred because of tooth decay; however, the "cavity" is not the decay process itself. Instead, it is the result of that process. It is the little hole in the enamel of your tooth. Therefore, the best option for "cavity" is the simple word "hole." Indeed, the word "cavity" can be used to describe any kind of hollow space, not merely the kind caused by tooth decay!

The word "trepidation" comes from Latin roots meaning to tremble. Whenever we say that someone is "full of trepidation," we are indicating that the person is disturbed and hence is likely trembling with fear or anxiety. The word can also be used to indicate the feeling of dread that causes such shaking. This is how it is being used in this question.

Perhaps you know the adjective "tumultuous." This describes someone or something that is very agitated and not at peace. The word "tumult" describes this state of affairs. In a rather obvious way, we can say, "A tumultuous person lives in a state of tumult." The word "unrest" is a combination of the prefix "un-", meaning not, and "rest." Whenever something is in a state of unrest, it is not at peace for sure! Hence, this word is a good synonym for "tumult."

A "gale" is a strong wind, so you must look for a word that adequately expresses this idea of being a strong windstorm among the options provided. Two of the options deal with strong rains, namely "deluge" and "downpour." The options "wind" and "breeze" do not indicate a strong enough sort of windstorm. Only "squall" describes a kind of sudden and very strong wind.

The word "malady" comes from the Latin word for bad, "malus." Someone who is "maleficent" is someone who wants to cause harm. Whenever someone is filled with "malice," he or she is filled with ill-will, meaning that he or she wants to harm others. A "malady" is something bad—namely, an illness. Hence, the best option among those provided is "sickness."

"Facade" is defined as an illusion or false appearance of something. The other word choices are not synonyms for "facade." "Fear" is an emotion of terror, "mystery" is a puzzle or enigma, "remainder" is a surplus, and a "building" is a structure.

"Agility" is "nimbleness," or ease of movement, which makes this the correct answer. "Candor" means frankness and "affability" means geniality, which is similar to "friendliness." "Posture" is unrelated to these definitions and refers to the position of a body.

"Vex" is defined as to irritate or anger, which matches the answer choice "annoy." "Attack" is too strong of a synonym and means instead to assault or strike. "Validate," "deliver," and "stifle" are not related to the word "Vex."