The Greek prefix idio- means unusual, weird, distinct, as in "idiot." So, an "idiosyncrasy" is an unusual personality trait, a quirk. Additionally, a "hint" is a clue; "patriotism" is love of one's country; "xenophobia" is fear of foreigners; "compassion" is warmth, generosity, and kindness. 

The Greek prefix ethno- means race, so an "ethnicity" is a race of people. Other examples of ethno- words include "ethnic" which means racial and "ethnology" the study of different races. It is worth noting that the suffix -ology means study of.

The Greek prefix a- means without, so "abyss" means without a bottom, bottomless, a void, a chasm. To provide further help, "timeless" means not fixed in any era, always fashionable and appropriate; "thankless" refers to a task that no-one wants to do because it is little appreciated.

The Greek prefix dia- means through, between, across, so "dialogue" means a conversation between two people. Another example of a dia- word is "diameter" which refers to a line that goes from one side of a circle to another, the passes across and through the circle. To provide additional help, "commiseration" is showing sympathy for someone's sadness, joining someone in sadness; "condescension" is talking down to someone in an arrogant way; a "confrontation" is a fight.

The Greek prefix phys- means related to nature, the human body, and medicine. So a "physician" is a doctor. Another example of a phys- word is "physical," which means relating to the body or to movement.

“Bestow” means to give or present something to someone. In this sense, it is most similar to the answer choice “confer,” which means to give an award, to present something. To provide further help, “request” means ask for; “enthrall” means captivate and charm; “meander” describes the indirect, side-to-side movement of something, like a river.

To "outfox" means to outwit or to get the better of someone. For example, one might write, “He outfoxed his opponent and emerged victorious.”

"Behoove" means be fitting, right or appropriate. For example, one might say that it behooves you to study hard for the ISEE Verbal section. So, "be fitting" is the correct answer. To help you, "required" means needed, and "insipid" means dull or bland.

To "bedevil" means harass. The best choice is "harass," which means disturb repeatedly. Considering the other choices, "curse" means wish evil upon something, "forage" means search for, and "threaten" means promise danger towards something or someone.

The prefix "be-" means to make, to do and “bedeck” means to decorate, to make something look festive. This is close in meaning to “festoon.” To provide further help, “puncture” means pierce; “dispute” means argue against; “inquire” means ask after; “apprehend” means catch or arrest.