The correct answer is A. Phycology.
Phycology is the scientific study of algae, a diverse group of photosynthetic organisms that are found in aquatic and terrestrial environments. Algae are a major component of the Earth’s biosphere, and they play an important role in the food chain. They are also a source of biofuels and other products.
Microbiology is the scientific study of microorganisms, which are organisms that are too small to be seen with the naked eye. Microorganisms include bacteria, viruses, fungi, and protists.
Psychology is the scientific study of the human mind and behavior. Psychology is a broad field that encompasses a wide range of topics, including cognition, emotion, social behavior, and personality.
None of the above is a correct answer.