Answer:
d. platelets
Explanation:
Platelets often referred to as thrombocytes, are membrane-bounded cell fragments that are obtained from the dissociation of bigger precursor cells referred to as megakaryocytes, that are produced from stem cells in the bone marrow.
Platelets are necessary for the blood clotting activities, making it very important for wound healing.
The mice will either leave or die because their food is gone from the fire so the cats will leave and the coyotes will die
D. Scientists use all of the above skills.