The given Venn diagram represents the changes that occur at puberty in adolescents.
Which of the following options is correct regarding this?

A. X represents male and Z represents female
B. Z represents male and X represents female
C. Y represents male and Z represents female
D. Z represents male and Y represents female

Hint: In the above Venn diagram, X represents the growth of public hair which is common in both males and females, Z represents testosterone secretion from testes and Y represents a widening of the pelvic region that can happen during puberty.

Complete answer: Testes secretes testosterone required for proper physical growth of boys. Testosterone promotes libido, muscle strength, and bone density in adulthood. The disorder in testes could produce too little testosterone. The testicles are really a pair of organs that produce sperm to preserve the male reproductive system. The testicles are recognized as gonads. It's also the primary androgen, which would be the term for any substance that enhances and/or supports the growth of masculine development. The pelvis is perhaps the relatively low portion of the human body's trunk between the stomach and also the thighs. The pelvis is present both in males and females but it is broad and large in females when compared to males. When puberty is attained, the pelvis region of the females tends to wide apart in order to bear the child during pregnancy. The growth of public hair is common in both genders when adolescents are reached. Hence, the X is the same in both genders whereas Z represents males and Y represents females.
So, the correct option is (D).

Note: Luteinizing hormone promotes the development of testosterone. When too much testosterone is formed, the hypothalamus warns the pituitary to lower LH, which informs the testes to reduce testosterone production. The pelvis framework is a basin-shaped ring of cartilage that attaches the spine to the femora.