Final answer:
The compound predicate in the sentence is 'bought a camera and took some pictures,' corresponding to option d.
Step-by-step explanation:
The compound predicate in the sentence 'I bought a camera and took some pictures' is 'bought a camera and took some pictures,' which means that the correct answer to the question is option d. bought a camera and took some pictures. The predicate contains the verbs and related information that tells us what the subject is doing. In this case, the subject 'I' is performing two actions: 'bought' and 'took,' which are combined with the conjunction 'and' to form a compound predicate.