This question tests your understanding of verb forms in English, specifically the use of bare infinitives after causative verbs and the correct verb form for describing involuntary actions.

The sentence structure is: "What makes me _____ all the time, stuffs up my nose, and makes my eyes _____?"

Step 1: Analyze the first blank
The phrase "makes me _____" requires a bare infinitive (the base form of the verb without "to"). After causative verbs like "make," "let," or "have," we use the bare infinitive. Therefore, the correct form is "cough."

Step 2: Analyze the second blank
The phrase "makes my eyes _____" also requires a bare infinitive for the same reason. The verb "water" here means "to produce tears" (an involuntary action). The correct form is "water."

Final Answer: The correct option is cough / water.

Why other options are incorrect:

• to cough / to water: Uses full infinitives ("to" + verb), which is incorrect after "makes"
• coughing / watering: Uses gerunds (-ing forms), which is incorrect after "makes"
• coughs / water: Uses third person singular form "coughs" which is incorrect after "me"

Related Concepts

Causative Verbs: Verbs like make, let, have, get that cause someone to do something. They are followed by bare infinitives (without "to").

Bare Infinitive: The base form of the verb used without "to" after certain verbs and modal auxiliaries.

Key Formula/Rule

Subject + make + object + bare infinitive

Example: The noise makes me cough.