A/an occurs when a portion of the intestine is constricted inside a hernia, cutting off its blood supply.

Strangulated hernia.

Explanation:

Strangulated hernia may be defined as the severe form of the hernia. The main symptoms of the strangulated hernia are fatigue, fever, vomiting and blood stools.

The strangulated hernia may occurs when the portion of the intestine is constricted inside the hernia. The blood supply is cut off in this hernia. This tissue may leads to the toxin release and can cause death of an individual.

Thus, the answer is strangulated hernia.

b.have there own function.

the answers are a and c