BEST ANSWER GETS TO BE THE BRAINLYEST!! Which is not a cause of infertility in men? A. having and undescended testis B. exposure to certain chemicals C. developing mumps after puberty D. lifting heavy objects

D. lifting heavy objects is not a cause of infertility in men. Infertility in men is typically related to issues that affect sperm production or the sperm delivery process. Having an undescended testis (A), exposure to certain chemicals (B), and developing mumps after puberty (C), particularly if it involves the testicles, can all potentially impact a man's fertility. However, lifting heavy objects is not associated with infertility but could potentially lead to other health issues if done improperly, like back injuries or hernias.

Extra: Infertility can be caused by various factors and conditions that affect the reproductive system. In men, infertility is often related to problems with sperm production or function. Key factors can include:

- Genetic issues or hormonal imbalances. - Physical problems, such as a blockage in the tubes that carry sperm. - Health conditions, including an undescended testis, which can affect the production of healthy sperm due to the testis not being located in the scrotum where the temperature is optimal for sperm production. - Exposure to certain chemicals and toxins, such as pesticides, heavy metals, and radiation, can damage sperm quantity and quality. - Certain illnesses, such as mumps, especially if contracted after puberty and it affects the testicles, can lead to a reduction in the amount or quality of sperm.

Understanding these factors is essential for diagnosing and treating infertility. However, regular physical activities, including lifting weights, typically do not affect a man's fertility unless it is associated with the use of anabolic steroids or if it results in significant trauma to the reproductive organs.