Facilitated diffusion.
A protein channel is used to allow larger or charged molecules to enter/leave the cell.
Mutation usually occurs when there is an error in the pairing of gametes during the crossing over stage of meiosis. There are many types of chromosomal mutation and these are: translocation, duplication, deletion, and inversion. Changes in the number of chromosomes may lead to unique changes in physical and behavioral traits of organisms.
I’m pretty sure it’s c but I might be wrong