Improve the underlined part of the sentence. Choose 'No improvement' as an answer if the sentence is grammatically correct. If proper treat, the wound should heal within a few weeks.

Explanation

The correct answer is 'Option 2'. Key Points The correct way to improve the underlined part of the sentence, "If proper treat," is to replace it with "If properly treated." The word "properly" is an adverb, and adverbs are used to modify verbs, adjectives, or other adverbs. In this case, "properly" is used to modify the verb "treated." The original sentence incorrectly used the noun "treat" instead of the past participle "treated" to form the passive voice. Therefore, the correct sentence would be: "If properly treated, the wound should heal within a few weeks."