What tense of the under lined verb and what does the tense mean

tense means two things

1:especially of a muscle or someone's body) stretched tight or rigid.

2:"she tried to relax her tense muscle become tense, typically through anxiety or nervousness.

answer; ///i believe the correct answer is (b) the writing of the ancients who lived in india after the indus valley inhabitants died out;

  b.

there are isolated pockets of farming, generally around rivers and oases, which are used for irrigation.