Consider the following sentence:

"Adam believes that Julio drives a red car"

How many subjects does this sentence contain? List them.
How many direct objects does this sentence contain? List them.

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I think there are two subjects, Adam and Julio.
As for direct objects, 'a red car' is the direct object for the subject Julio, and I think that the entire phrase 'that Julio drives a red car' is the direct object for the subject Adam, but I don't know if that's correct.

3 answers

You're mostly right. Direct objects relate to verbs, not subjects. The clause is the direct object of "believes." The phrase is the direct object of "drives."
Thank you for the clarification. Would it be correct, then, to answer like this:

Subjects: two, Adam and Julio
Direct Objects: two, 'a red car' and 'that Julio drives a red car'
Yes, you are right.

You're welcome.