The correct answer is 3. Jason drew a picture of a tree.
Step-by-step explanation
A complete sentence has three main components which are the subject, the verb, and the complement. In the text when they talk about Jason, they mean that he drew a tree, however, the author does not use the verb "drew" so the sentence is incomplete. Therefore, the correction of this sentence must have the verb. Then the correct sentence would be "Jason drew a picture of a tree. The correct answer is 3.