Fix the verb: Every day Marcus run to the bus stop.
- ran
- runned
- runs (correct answer)
- run
Explanation: This question tests forming regular verbs with subject-verb agreement (CCSS.L.3.1.d). The verb 'run' needs present tense with third person singular. In present tense, he/she/it requires -s: run→runs. In this sentence 'every day' tells us we need present tense. The subject 'Marcus' (he) requires the -s form of the verb. Choice C is correct because it properly adds -s for third person singular. The form 'runs' is the correct present form with he/she/it. Choice D 'run' is incorrect because it doesn't add -s with he/she/it subject. This error happens when students forget subject-verb agreement in present tense. To help students: Present tense rule - add -s with he/she/it (Marcus runs, she walks). Time marker 'every day' signals present tense.