How is ATP produced in mammalian cells under aerobic conditi

How is ATP produced in mammalian cells under aerobic conditions?

1. photophosphorylation
2. oxidative phosphorylation
3. substrate-level phosphorylation
4. phosphorolysis

a. 1

b. 2,3 and 4

c. 2

d. 1 and 2

e. 2 and 3

Hi,

4.Phosphorolysis: in this process cleavage of a compound where attacking group is phosphate.

Hence by analysing above explanation it is obvious that only option c. 2 (oxidative phosporylation) is correct.

I hope my answer is satisfactory.

Thanks!!