Questions: Select the sentence that contains both a common noun and a proper noun. My dog's name is Buddy. The building is tall

The answer is: My dog's name is Buddy.

Explanation:

• "dog" is a common noun because it refers to a general category of animals.
• "Buddy" is a proper noun because it is the specific name of the dog.

In contrast, the sentence "The building is tall" contains only a common noun ("building") and no proper noun.