Answer:
The correct option is C. After Julia rode her bicycle three blocks, the tire went flat.
Step-by-step explanation:
The verb should be in the past tense.
Option A is incorrect because both the forms of the verb used are wrong.
Option B is incorrect because the form of the verb is not correct. The verb should be in the past participle form, not past perfect.
Option D is not correct because both the forms of the verb are incorrect.
Option C uses the right form of verb i.e past participle and hence is correct.