Answer the following question given this paragraph: 

Oceanography is the study of the oceans. The word oceanology might be more accurate, since “ology” is “the study of. ” “Graph” is “to write” and refers to map making. But mapping the oceans is how oceanography started.


Q: What does the ending 'ology' refer to?

 Choices:

- theory of

- Application Of

- focus of

- study of

A:
study of
