"is your pet on flea or heartworm prevention? " describes a question you would ask for the a. body system history b. body systems review c. environmental history d. medical history of the primary problem

a. body system history

Explanation:

A heartworm is roundworm which is parasitic in origin. It is thread like in appearance. It is spread from host to host through the bites of mosquitoes. It affects the lungs, arteries and heart.  

The body system history includes the information of the integumentary system, cardiovascular system, respiratory system, urinary system, gastrointestinal system, reproductive system, musculoskeletal system, head and neck and central nervous system.  

In heartworm is likely to affect the cardiovascular system of the pet hence, body system history should be reviewed.  

i believe the answer is a or 1

it's the cell cycle, but cytokines is when the cell divides.

theres 3 stages interphase,mitosis,and cytokines.

interphase prepares the cell for division.

mitosis is the process of dividing the cell,it has 4 parts interphase,anaphase,metaphase,and telophase.

lastly there's cytokines,that's when the cell divides into 2 daughter cells