Respuesta :
The first one, because it's the only one that has anything to do with the study of life.
Answer:
The correct answer is what is the effect of exercise on heart rate in horses?
Explanation:
An individual who possesses the knowledge in the field of biology is known as a biologist. It is a multidisciplinary subject that comprises various branches like zoology, botany, and others. Of the mentioned questions, the effect of exercise on the heart rate of the horses comes under zoology category. In this field, one studies about the influence of various constituents found in the surrounding on the health of animals.
