Respuesta :

Uracil I believe (sorry if it’s wrong)
MrScienceGuy

Answer:

RNA contains Uracil

Explanation:

DNA's four bases are: Adenine, Thymine, Cytosine, and Guanine.

RNA replaces the Thymine with Uracil, making it the correct choice.

If I helped, a brainliest answer would be greatly appreciated!