Improve the highlighted part of the sentence.
The house is a pear tree in the backyard.

The correct substitution of the highlighted part is (c) has a pear.
Explanation:
1. The verb "has" correctly shows possession, and "a pear tree" matches singular agreement.
2. "A pears" and "have a pears" are grammatically incorrect due to mismatched plurality.
3. "No improvement" is not suitable as the original sentence lacks clarity.
Hindi Explanation: "Has a pear tree" सही वाक्य रचना है जो एक पेड़ के स्वामित्व को दर्शाती है।
Corrected sentence: The house has a pear tree in the backyard.