PLEASE IM GONNA FAIL WILL GIVE BRAINLESS IM SO TIRED

I’m doing some practice exam questions for biology, and i’m not sure how to do these 3 parts to the question.

Fan egg cell containing the (n+1) number of chromosomes combines with a sperm cell containing the (n) number of chromosomes, what is the result of this union? a) all future somatic cells of the organism will contain the (2n + 1) number of chromosomes. b) all future somatic cells of the organism will contain the (2n - 1) number of chromosomes. c) only certain somatic cells of the organism will contain the (2n + 1) number of chromosomes. d) all future somatic cells of the organism will contain the normal diploid number of chromosomes.

Regarding most of the narrator’s story, which word best describes the tone?