Answer :
Answer - A.)Science
Reasoning - Anything that Study Marine Animals and Mammals for logical research is Science in Generalization.
Reasoning - Anything that Study Marine Animals and Mammals for logical research is Science in Generalization.

Answer: A.) Science
Explanation:
Science is a fact finding discipline which takes initiative to find out the cause of natural processes occurring in the universe and that have occurred in the past on the basis of experimentation procedures. It describes the physical, chemical and biological characteristics of an entity whether living or non-living.
On the basis of the above description, cetology is a science. As it involves the experimentation to examine the factors which are responsible for physical characteristics and behaviors of the marine mammals.