The correct option is Point Q.

Step-by-Step Explanation:
To understand why the surgical cut is made at Point Q, let us identify the labeled parts in the provided diagram of the human male reproductive system:

• Point R: Points to the epididymis/testis region, which is responsible for the production and maturation of sperm cells.
• Point Q: Points to the vas deferens (also known as the sperm duct). This is the muscular tube that transports mature sperm from the epididymis to the urethra.
• Point S: Points to the urinary bladder, which stores urine.
• Point T: Points to the prostate gland, which contributes seminal fluid to nourish and transport sperm.
• Point P: Points to the urethra, the common channel for the release of both urine and semen.

Concept of Vasectomy:
The surgical method of contraception in human males is called a vasectomy.
During a vasectomy, the vas deferens (sperm ducts) are cut and tied (ligated) or sealed. This blocks the path of sperm from the testes, preventing them from mixing with the seminal fluid. As a result, the semen ejaculated contains no sperm, making fertilization impossible and providing permanent contraception.
Since the tube labeled Q represents the vas deferens, this is the precise location where the cut and tie is performed.