Correct option is B
The correct option to fill in the blank is (B) selling.
Explanation: After verbs like “see” or “didn't see,” the verb used is usually in present participle form (-ing).
Example: I didn’t see anyone selling them.
Selling (हिंदी अर्थ): बेचता हुआ
Meanings of the other options:
· A - Sold: Past form (बेचा)
· C - Sells: Present simple (बेचता है)
· D - To sell: Infinitive (बेचने के लिए)
Information Booster: Use verb+ing (present participle) after perception verbs like "see", "hear", "watch", especially in negative sentences.