Which of the following might be a piece of evidence?

A. Weapons

B. Blood

C. Hair

D. All of the above

The correct answer is D. Weapons, blood and hair might be a piece of evidence.

Explanation:

In criminal trials, evidence is referred to any object or event that can serve as evidence to determine how, when, where and / or who committed a particular crime.

Weapons are evidence because through fingerprints, ballistic evidence and forensic expertise it can be determined if it was used to commit the crime, and who used it.

In turn, hair, blood, and all other types of body fluid, are used to determine the DNA of the people involved in the crime scene.

D because weapons could have fingerprints and blood and hair are dna