One of the most common causes of acute pain is a. trigeminal neuralgia. b. malignancy. c. headache. d. fibromyalgia.

Headache

Explanation:

The most common cause of the acute pain is headache. It can be specific or non specific.

The pain in the head can be caused due to any of the reason. It can a normal headache due to be being hungry for a longer period of time.

It can be a migraine pain, it can be pain due to tumor in the brain. There can be pain due to some injury.

one characteristic that is shared by all is a soft body. many

of these invertebrate animals also have an outer shell to protect their

body. oysters, clams, snails, and mussels are all mollusks. so are octopuses, squids, and slugs. mollusks live on land and in freshwater.

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

i hope this : )