Identify the common noun(s) from the below sentence:
Jack and Jill went up the hill.

• Option A: Jack- this is a proper noun because it refers to the name of a specific person. As a result, it is the incorrect option.
• Option B: Jack and Jill- they're proper nouns because they share the names of two people. As a result, it is the incorrect option.
• Option C: Hill- this is a common noun because it refers to a thing's final name. So, it is the correct answer.
• Option D: Jack and Jill, as well as a hill- Jack and Jill are proper nouns. 

Hence, option C is the correct answer.