Fill in the blank with the appropriate verb form. Ram was watching TV…

The correct answer is Option (3) → was preparing

Past continuous tense:

• We use was/were + verb-ing for an action that was going on at a time in the past.
• Here two actions were going on at the same time.
• Ram was watching TV.
• At that same time, I was preparing for my exam.
• So both parts take the past continuous.
• Clue word: "While" means during the same time.
• With "was watching" in the first part, "while" calls for "was preparing".
• Complete sentence: Ram was watching TV while I was preparing for my exam.

Why the Other Options are Incorrect?

Option 1: am preparing — Incorrect.

• "Am preparing" is the present continuous.
• The other action, "was watching", is in the past.
• Both actions happened at the same time, so both must be in the past.
• Example: I am preparing for my exam these days.

Option 2: had prepared — Incorrect.

• "Had prepared" is the past perfect.
• It shows an action finished before another past action.
• "While" shows two actions going on together.
• Example: I had prepared well, so the paper felt easy.

Option 4: would be preparing — Incorrect.

• "Would be preparing" talks about an action still to come, seen from the past.
• Here the preparing was going on at that very time.
• Example: Riya said she would be preparing for her exam all next week.