Final answer:
The following sentence is balanced: Our family likes to go skiing, swimming, and camping.
Step-by-step explanation:
The following sentence is balanced: Our family likes to go skiing, swimming, and camping.
In a balanced sentence, all the parts are equal in weight and importance. The sentence in option d) follows this principle by using parallel structure. The subject 'our family' is followed by the verb 'likes' and a series of gerunds that all function as direct objects ('to go skiing, swimming, and camping'). This creates a balanced and grammatically correct sentence.