In the following passage at certain points you are given a choice of three words, one of which fits the meaning of the passage. Choose the best word. Mark the letter, viz. (a), (b) or (c) relating to this word on your Answer Sheet.

We know that the average depth of the sea is about two and a half miles, but in a few places it is very deep indeed—over six miles. The air presses upon our bodies with a weight of about fifteen pounds to the square inch at ____

Options