"if a mutation occurs in a gamete, which of the following is most likely to result?

a. if the mutation occurs on a recessive gene, it will most likely be expressed.

b. if the mutation is non-disjunctive then an extra chromosome could be in every cell of the offspring.

c. the mutation will not always cause the offspring to be genetically disadvantaged.

d. the mutation will not be passed on to the offspring"

c.The mutation will not always cause the offspring to be genetically disadvantaged.

Explanation:

There are a lot of different mutations that can happen in different parts of the genetic material that can affect or cannot affect the offspring of the individual, for example, being left handed is a mutation that doesn´t affect the offspring and cause it to be genetically disadvantaged, other examples of mutations that do not cause the offspring to be genetically disadvantaged could be having blue colored eyes, or brown hair.