My father strained every nerve to enable me to get settled in life. A. worked very hard B. spent a huge amount C. tried all tricks D. bribed several persons

The correct answer is A.

The phrase “strained every nerve” means to exert oneself to the utmost. In this context, it means that the father worked very hard to enable his son to get settled in life.

Option B is incorrect because it does not mean to exert oneself to the utmost. Option C is incorrect because it does not mean to work hard. Option D is incorrect because it does not mean to exert oneself to the utmost and it is also illegal.