She is very keen . . . . . . . . going abroad, for higher studies. A. at B. on C. for D. over

The correct answer is C. for.

The word “for” is used to indicate a purpose or goal. In this case, the speaker is

saying that the woman is very keen on going abroad for higher studies. This means that she has a strong desire to go abroad in order to further her education.

The other options are not as appropriate in this context. The word “at” is used to indicate a location or position. The word “on” is used to indicate a surface or area. The word “over” is used to indicate a

period of time or a distance.

In conclusion, the correct answer is C. for. This is because the word “for” is used to indicate a purpose or goal. In this case, the speaker is saying that the woman is very keen on going abroad for higher studies.