We hung there for hours, oblivious to the disaster around us.

What is the meaning of oblivious as used in this sentence?

A) Unaware

Explanation:

Unaware is the correct answer. The author and her sister were most likely unconscious after the tornado flung their car into a tree, and thus would be not forgetful, but unaware of, anything around them.

Not knowing what's going on around you or the lack or knowledge of knowing what's happening.