The prefix "ne-" often indicates a negative word. "Negate" most nearly means to invalidate or to disprove something. "Validate" is an antonym to "disprove."

A "technophobe" is someone who dislikes, or is afraid of, new technology. Any time you see a word that ends in the suffix "-phobe," you know that the word means someone who is afraid of something. For example, an "arachnophobe" is afraid of spiders.

A "technophile" is someone who loves technology. Any time you see a word that ends with the suffix "-phile," it means that the word will be describing someone who loves something. For example, a "bibliophile" is a person who loves books.

If a castle wall or a defense is “vulnerable,” it is open to an attack or lacking a defense. It is similar in meaning to "undefended," which means not defended. To further help you, if you are “reckless,” you do not consider the results of your actions; “frightened” means scared.

“Portable” means able to be transported or moved, so “moveable,” which means able to be moved, is the correct answer. The suffix "-able" generally means able to have something done to it. As for the other answer choices, “predictable” means able to be predicted or boring; “mysterious” means secretive and difficult to understand; “stubborn” means holding to one's opinion even when given a good reason or evidence to change one's mind; and "ornate" means decorated in a fancy, detailed way.

One definition of a "quarrel" is an argument, so "quarrelsome" means often starting or participating in arguments. That means that "argumentative" is the best answer choice.

"Illumination" comes from the root verb "illuminate" which means to light something up. The suffix "-ion" indicates a noun. 

The prefix "fore-" means before or coming first, so “foremost” means "primary," or first in order or importance. To provide further help, “secondary” means coming second in an order or of less importance than other things. Additionally, “vast” means very large; “genuine” means real; and “lasting” means existing for a long time.

The suffix "-tact" means related to touch, so something that is “intact” is something that has not been broken by people touching it. This is most similar in meaning to the word “undamaged,” where “damaged” means defaced or wrecked and the prefix "un-" means not, causing “undamaged” to mean not defaced or wrecked; in the same condition something was in before an event that could have potentially damaged it. To provide further help, “ripped” means torn; "intense" means of great power or degree, and “soggy” means damp or wet; and “burdened” means weighed down with things or responsibilities

"Inconsiderate" is an adjective that means "thoughtlessly causing hurt or inconvenience to others," so we need to pick out an adjective that means something like "thoughtlessly hurting or inconveniencing others." While both "unusual" and "unsure" begin with "un-," a negative prefix, just as "inconsiderate" begin with "in-," another negative prefix, "unusual" means "not usual" and "unsure" means "not sure," whereas "inconsiderate" means "not considerate." So, because neither "unusual" nor "unsure" mean the same thing as "inconsiderate," neither can be the correct answer. "Rude," however, is an adjective that means "offensively impolite or ill-mannered," and because "rude" is the answer choice closest in meaning to "inconsiderate," "rude" is the correct answer.