41) what is the first threat to life from a massive third-degree burn?
a) infection
b) catastrophic fluid loss
c) unbearable pain
d) loss of immune function

Option 'B' is correct.

Explanation:

The first threat to life from a massive third degree burn is Catastrophic fluid loss.

As we know that the third degree burn is life threatening.

Third degree burn penetrate into victim's fat which may lead to dehydration.

Loss of water in greater amount in body is "Catastrophic fluid loss".

Hence, Option 'B' is correct.

"a.) well–developed vascular system."