question: delayed environment variable expansion is not enabled by default.
Capitalize this past sentence correctly.
A: Delayed environment variable expansion is NOT enabled by default.

question: now let us go through some of the scenarios that gave you a lot of hiccups:
Capitalize this past sentence correctly.
A: Now let us go through some of the scenarios that gave you a lot of hiccups:

question: our humanitarian aid to pakistan is the latest example of europe's solidarity in action.
Capitalize this past sentence correctly.
A: Our humanitarian aid to Pakistan is the latest example of Europe's solidarity in action.