Help me im dumb

Why does meiosis produce cells with half the chromosomes? o a. most of the chromosomes are not necessary to keep an organism alive. b. a gamete needs only half the number of chromosomes because two gametes join together. o c. it makes the gametes easier to move around in the organism. o d. it is faster to produce gametes with fewer chromosomes.

Which statement correctly describes a way that mutations increase the likelihood that a species will survive in a changing environment

What is used as a template during replication? a- mrna b- trna c- rrna d- dna