Answer:
C. No capitals must be used after semi-colons. Also a noun ending with an 's' should not uses another 's' after an apostrophe. So it cannot be: The two girls's. It can only be: The two girls'
B. The events that have caused the narrator to think he will die the following day
Biology does influence gender development. For example, some differences between typical boys and girls can be explained by the effect of genes on sex chromosomes, and by the levels of sex hormones and their effect on the brain during early development (e.g., prenatal exposure to high levels of male-typical hormones).