Ali usually gets up early _____the morning and goes to bed late _____ the night.

Ali usually gets up early _the morning and goes to bed late _ the night.

In, at

On, at

In, on

None of these

"Ali usually gets up early in the morning and goes to bed late at night."

We say "in the morning" for parts of the day.

We say "at night" for the nighttime.

So the correct and natural usage is: in the morning, at night.