Step 1: Analyse options.
- 3 (Opening): Sets the context—Mintu wants a day off.
- 5 (Action): Because he wanted a day off, he pretended to be sick.
- 2 (Reaction): His father took the illness seriously and called a doctor.
- 1 (Climax): The doctor sees through the act and takes out a syringe.
- 4 (Resolution): Fear of the needle makes Mintu admit he is fine.
Step 2: Conclusion.
The sequence 3-5-2-1-4 creates a logical narrative of cause and effect.
Final Answer: (b) 3, 5, 2, 1, 4.