"Profuse" is an adjective that means "abundant" or plentiful.

"Infinite" means limitless, or impossible to measure or calculate. "Substantial" means important, large, or valuable. "Benign" means gentle or kind, and in medical terms means not harmful. "Sparse" is an antonym of "profuse" and means few or infrequent.

There is a false root word (eager) which should not be misidentified here. The true meaning of meager is most nearly "not enough" or insufficient. "Bountiful" is an antonym to "meager." "Anticipatory" means something that anticipates or precedes something else. To be "notorious" is to be famous or renowned for a dubious reason. 

"Myriad" and "multitude" both describe a great quantity of something. These words are synonymous. The other words do not have meanings related to the word "myriad." "Myrtle" is a kind of evergreen shrub. It is not related in meaning to the word "myriad."

"Astonishing" and "astounding" are synonyms. The other words, "astronomical," "astral,"  "stellar," and "celestial," all describe the sky, stars, and space! Note that astronomical and astral share a root!

The words "typical" and "representative" can be used to describe something with distinctive qualities. The other words do not have meanings that are as closely related those of "typical" and "representative." In fact, the other answer choices are antonyms of the word "typical."

The words "simple" and "facile" are synonyms. The other words do not have related meanings. "Rude" and "rebellious" are somewhat related to each other but not to the word "simple." "Symptomatic" is not at all relevant, as it is a medical term referring to showing symptoms of a disease or illness. Finally, the word "complex" is actually an antonym of the word "simple."

"Orthodox" means "traditional," according to the book, or conservative.

"Apocryphal" means questionable, fake, inaccurate.

"Effusive" means gushing, profuse or unrestrained.

"Toilsome" means difficult or laborious. 

"Secular" means not spiritual or religious.

The adjective "woeful" means terribly sad and pitiful, pathetic and tragic. Additionally, "repulsive" means gross, disgusting, not attractive; "frantic" means hurried, stressed; "sturdy" means reliable, strong and firm, unlikely to fall over or break; "unhinged" means disturbed, mentally imbalanced, crazy.

"Sporadic" is an adjective defined as occurring at irregular intervals. The term "occasional means occurring, appearing, or done infrequently. This makes "occasional" the correct answer as a synonym "sporadic."

The correct answer is "varied." "Eclectic" is an adjective defined as broad and diverse range of sources.

Varied means showing "variation or variety," making it a synonym of "eclectic."