Final answer:
The four nitrogenous bases found in RNA are adenine, guanine, cytosine, and uracil.
Step-by-step explanation:
The four nitrogenous bases found in RNA are adenine, guanine, cytosine, and uracil. These bases are similar to the bases found in DNA, except for the substitution of thymine with uracil in RNA. Adenine pairs with uracil in RNA, just as adenine pairs with thymine in DNA.