Is a gene that can be masked by dominant gene

i believe the answer is recessive.

Explanation:

a recessive gene can be expressed as rr instead of RR so if one does a punnet square it would show up to be Rr Rr Rr Rr, since R represents a  dominant  trait and r being being recessive, then the answer would be recessive. (sorry if it doesn't really make any sense)

the relative standard reduction potential of the half-cell in which reduction occurs; more positive than the other half-cell. reduction is a chemical process in which electrons are added to an atom or an ion; it always occurs accompanied by oxidation of the reducing agent.

c. live where it’s cold and icy