Which of the following bases are found in RNA?

• A. Adenine, guanine, uracil, and thymine
• B. Adenine, guanine, cytosine, and thymine
• C. Adenine, guanine, cytosine, and uracil
• D. Guanine, cytosine, thymine, and uracil

Answer: (C)

Verified step by step guidance

1. Recall that RNA (ribonucleic acid) is composed of four nitrogenous bases: adenine (A), guanine (G), cytosine (C), and uracil (U).
2. Understand that thymine (T) is a base found in DNA, not RNA. In RNA, uracil replaces thymine.
3. Identify the bases listed in each option and compare them to the known RNA bases: A, G, C, and U.
4. Eliminate any options that include thymine, since thymine is not present in RNA.
5. Confirm that the correct set of bases for RNA is adenine, guanine, cytosine, and uracil.