Question

prostate cancer can be diagnosed by
multiple choice
digital rectal exam.
biopsy.
testing of prostate - specific antigen.
semen analysis.

Explanation:

Digital rectal exam (A) can detect prostate abnormalities. Biopsy (B) is the gold standard for prostate cancer diagnosis. Prostate - specific antigen (PSA) testing (C) helps in screening. Semen analysis (D) evaluates sperm and is not used for prostate cancer diagnosis.

Answer:

D. semen analysis. (Wait, no, correction: Actually, the correct answer is that semen analysis is not used for prostate cancer diagnosis. The correct methods are digital rectal exam, biopsy, and testing of prostate - specific antigen. But if we have to choose the incorrect one here, the answer is D. semen analysis. But if the question is which is NOT a method, then D. But if it's which are methods, then A, B, C. But since the options are given, and semen analysis is for fertility/sperm health, not prostate cancer diagnosis. So the answer for the incorrect one is D. semen analysis. But let's re - evaluate:

Wait, the question is "Prostate cancer can be diagnosed by" and the options are:

A. digital rectal exam.

B. biopsy.

C. testing of prostate - specific antigen.

D. semen analysis.

So the correct answer (the one that is NOT a method) is D. semen analysis. So: