B. he describes his son's rare mathematical background
For this essay you can make a compare and contrast essay that compares women before education and after education the benefits of them getting education or you could research important things women did that w would not have without women like the car heater, fire escapes, electronic fridgerator, dishwasher, heating in general, computer software, etc.
(Because ) because if you put which or the others it wouldn’t make any sense
