The testicle secrets the following hormones:

Correct Answer: C

Rationale: Step 1: The testicles are primarily responsible for producing male sex hormones. Step 2: Testosterone is the main male sex hormone secreted by the testes. Step 3: Testosterone is an androgenic hormone responsible for male characteristics. Step 4: Progesterone is a female sex hormone, not primarily secreted by the testicles. Step 5: Therefore, the correct answer is C (testosterone).

Correct Answer: A

Rationale: The correct answer is A: the cervix. The cervix is a component of the uterus that connects the uterus to the vagina. It plays a crucial role in pregnancy, as it dilates during childbirth to allow the baby to pass through. The other choices, B: the corpus, C: the head, and D: the mid piece, are incorrect as they do not refer to components of the uterus. The corpus typically refers to the main body of an organ, while the head and mid piece are terms commonly associated with structures in cells or organisms, not the uterus.

Correct Answer: D

Rationale: The correct answer is D because the sex of the child is determined by the sex chromosome carried by the spermatozoon that fertilizes the ovule. Sperm carries either an X or a Y chromosome, determining if the child will be male (XY) or female (XX). Choices A and B are incorrect because the type of spermatozoon or ovule does not solely determine the child's sex. Choice C is incorrect as well because the sex chromosome of the ovule alone does not determine the child's sex.

Correct Answer: B

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Correct Answer: B

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.