Final answer:
To create a compound object by joining the two sentences about John's activities, you would use a coordinating conjunction, resulting in the sentence 'John made a salad and bbq chicken.'
Step-by-step explanation:
To combine the sentences with a compound object, you would join the two activities that John completed into one sentence with a coordinating conjunction. In this case, 'and' is the appropriate conjunction to use, as it shows addition. The resulting sentence is: John made a salad and bbq chicken.
This showcases a compound sentence where 'John' is the subject performing two actions—making a salad and making bbq chicken. The compound nature of the sentence is defined by having more than one main clause or by linking actions performed by the same subject. This is an example where a simple compound structure efficiently combines similar actions by the same subject.