Prepositions indicate direction, time, location, and spatial relationships, as well as other abstract types of relationships.
Prepositions indicate relationships between other words in a sentence.
Many prepositions tell you where something is or when something happened.
As the name suggests they generally tell position if something. Like, behind, front, on, at etc.
A.
Walt Whitman was an American romantic poet born in 1819 in New York.
Parts it the correct answer.
The answer is D- worry he answer is b- recklessness because plethora and scarcity are opposites and so are caution and recklessness :)