Peace was reached between Israel and Egypt after which event(s) took place? i. Egypt recognized Israel's right to exist.
ii. Egypt promised to return the Gaza Strip to Israel.
iii. Israel promised to return the Sinai Peninsula to Egypt.

A. i. only
B. iii: only
C. i. and iii.
D. ii. and iii.

Correct answer is C. i and iii.

Explanation:

C is correct answer because since the the Six Day war until  Egypt–Israel Peace Treaty  these two countries were in constant war. Still, with the collaboration and interference of United States the agreement was reached. Egypt decided to recognize Israel, which was heavily criticized by the Arab states, and on the other hand Israel decided to take back Sinai Peninsula that they took from Egypt during the wars.

That is why other options are not correct as Gaza strip is the border between two countries.