Final answer:
a) Estrogen; Testosterone. The correct answer is the predominance of estrogen for females and testosterone for males, option a) Estrogen; Testosterone.
Step-by-step explanation:
The hormonal dimension of sex is defined as the predominance of estrogen for females and testosterone for males. Therefore, the correct answer is a) Estrogen; Testosterone. In females, estrogen along with progesterone plays a crucial role in the development of secondary sexual characteristics and in preparing the uterus for pregnancy. On the other hand, testosterone and other androgens are primarily responsible for the development of secondary sexual characteristics in males, such as facial hair growth, a deep voice, and muscle strength. However, it's important to note that both males and females produce both androgens and estrogens, albeit in different amounts.