Use the sentence to answer the question. I have almost everything I need to make the birthday cake, _____ I don't have the frosting yet. Which conjunction should be used to complete the sentence above?

a. yet
b. so
c. but
d. for

c. but

The conjunction that should be used to complete the sentence is "but." The sentence structure indicates that the speaker has mentioned having almost everything needed to make the birthday cake, but there is still something missing. The word "but" is commonly used to contrast information or show a notable exception, which fits the context in this sentence. So, the correct answer is option c. but.

c. but