the type of reaction in a voltaic cell is best described as

1.spontaneous oxidation reaction only
2.nonspontaneous oxidation reaction only
3.spontaneous oxidation-reduction reaction
4.nonspontaneous oxidation-reduction reaction

i know its spontaneous, but what else?

The answer is 3

You may not have oxidation without having reduction at the same time.

Its 5

goat

Chicken

spontaneous oxidation

Best guess is spontaneous oxidation