In this question there should be two answer 1st and 3 Rd option but acc to answer only 3 pls explain this I m confused

Dear student,

Statement 3 is correct.
Whereas, statements 1, 2 and 4 are wrong.
The statement 1 is wrong because it is given that estrogen attains peaks twice in a menstrual phase. 
The correct statement would be estrogen attains peaks twice in a menstrual cycle.
Menstrual phase is only that part of the cycle where menstruation occurs. Whereas, menstrual cycle comprises of 4 phases -
1. Menstruation phase
2. Follicular phase
3. Ovulation
4. Luteal phase

I hope your doubt is clear now.

Regards.