Social psychologists believe that is particularly strong during the early stages of a relationship, and that increases as the relationship grows and matures.

Social psychologists believe that  romantic love is particularly strong during the early stages of a relationship, and that  affectionate love  increases as the relationship grows and matures.

Explanation:

Social Psychology -: Social psychology is the empirical research in the field of psychology of how the perceptions, emotions , and actions of individuals are influenced by the real, perceived, and inferred involvement of others. Science uses the scientific method in this description to refer to analytical study, while the terms emotions, feelings , and behaviors refer to the psychological factors that can be measured in human beings.

As a consequence of the relationship between mental state and social circumstance, social psychologists usually explain human behavior, studying the factors / conditions under which those attitudes, acts, and feelings occur. Therefore, social psychology is concerned with the cognitive construction of these emotions, ideas , values, intentions, and objectives, and how these mental representations in turn impact our relationships with others.

answer; i do believe that the answer is (c) electrolyte imbalance or (d) cessation of menstrual cycle; plz check first good luck