What is the central idea of the article A Tale of Two Indias?

Asmall closed hole formed in an outwash plain or moraine. forms when a  glacier retreats then remains stationary. 

Your answer is d. silli hope this ! : ) i left an explanation down below if you need it: a sill forms when hot magma squeezes between layers of rock to form a hardened sheet of rock. a sill is basically a tabular sheet intrusion between old layers of sedimentary rock, volcanic beds, or in the direction of foliation inherent in metamorphic rock. the word sill means a concordant intrusive sheet.

The answer is gross domestic product. hope this

Guiana highlands  is the part of venezuela that is largely known to be unexplored.

so, the answer is  option c. guiana highlands.
happy studying! ^_^