Location of Prostate Glands
The correct location of the prostate glands is below the bulbourethral gland. Let's delve into the details of why this is the case.

Anatomy of Male Reproductive System
- The male reproductive system consists of several organs, including the testes, epididymis, vas deferens, seminal vesicles, prostate gland, bulbourethral gland, and the penis.
- The prostate gland is a walnut-sized gland located just below the bladder and in front of the rectum. It surrounds the urethra, which carries urine from the bladder out through the penis.

Relation to Bulbourethral Gland
- The bulbourethral gland, also known as Cowper's gland, is a small gland located below the prostate gland.
- It is responsible for producing a clear, slippery fluid that lubricates the urethra and neutralizes any acidity in the urethra caused by urine residue.

Prostate Gland's Role
- The main function of the prostate gland is to produce fluid that mixes with sperm and other fluids during ejaculation to form semen.
- This fluid helps nourish and protect the sperm, increasing their chances of fertilizing an egg.

Conclusion
In conclusion, the prostate glands are located below the bulbourethral gland in the male reproductive system. Understanding the anatomy and location of these glands is essential for comprehending their functions and roles in the reproductive process.

The answer should be option (b) seminal vesicles