Cytology is related to the study of:

cells

The correct answer is Option (4)- cells

Cytology is related to the study of cells.

Explanation:

Cytology is a branch of biology that focuses on the study of cells, their structure, function, properties, and the processes that occur within them. It encompasses the investigation of various cell types, including those of animals, plants, fungi, and bacteria. Cytologists use microscopic and molecular techniques to explore the intricacies of cellular organization and function, contributing to our understanding of life at the cellular level.