Question

saliva found at the scene of a crime ______.

a. can be used to prove a fact in the criminal case

b. is classified as biological circumstantial evidence

c. is the same type of evidence as a confession

d. supersedes nearly all other types of evidence

Explanation:

• Option a: Saliva (e.g., for DNA) can prove facts (like suspect presence), so this is correct.
• Option b: Saliva is biological, but it can be direct (e.g., DNA match) not just circumstantial, so b is wrong.
• Option c: A confession is testimonial, saliva is physical/biological—different, so c is wrong.
• Option d: No evidence supersedes all others; weight depends on case, so d is wrong.

Answer:

a. can be used to prove a fact in the criminal case