Which of the following statements is true regarding STD awareness?

• A. Most people know immediately if they have an STD.
• B. STDs always present symptoms.
• C. Regular screening is unnecessary.
• D. Many people are unaware that they have an STD.

Answer: (D)

The key idea is that many sexually transmitted infections can exist without noticeable signs, so people may have an STD without realizing it. Infections often show no symptoms, or the symptoms can be mild, nonspecific, or delayed, which means someone can be unaware they’re infected while still potentially transmitting it to others. That makes the statement about many people not knowing they have an STD the true one.

This also explains why relying on symptoms alone isn’t enough—because not everyone will have them. Regular screening is important to catch hidden infections and protect both partners. The other statements aren’t accurate because they imply people always know they’re infected, or that symptoms always appear, or that screening isn’t needed, which isn’t true given how STDs can behave.