They should enter the field of Ichthyology, as it is the study of fish.
Oceanography, is a generalized study of the ocean, such as plate tectonics, ocean-life, ecosystems, and other aspects of ocean study.
Answer:
C
Plants are living things but most cannot move. (Not A)
Some living things don't breathe like virus they don't go through cellular respiration. (Not B)
There are thousands of living things that are not visible to the naked eye, like water bears. (Not D)
Answer:
The answer is D, because if the all of them will either stop the object in motion or move an object that is staying still.
Explanation: