Statement: Should the rule mandating helmets for both rider and pillion on motorcycles be enforced strictly? Arguments: I. Yes. It is a rule, and rules should be followed strictly by all. II. No. Individuals should decide how to protect their own lives. III. No. Helmets protect only the head; the rest of the body remains unprotected. IV. Yes. The head is highly vulnerable; helmets significantly reduce severe injury risk. Choose the option that best identifies the strong argument(s).

Introduction / Context:
Road-safety rules derive from public-health objectives and externalities (medical burden, third-party risks). Helmet mandates target the most fatal injury site—the head.

Given Data / Assumptions:

• Head trauma is a leading cause of death in motorcycle crashes.
• Compliance norms matter: rule enforcement increases helmet usage.
• Personal-risk choices create social costs (emergency care, productivity loss).

Concept / Approach:
Arguments grounded in safety evidence and rule-of-law compliance are stronger than appeals to personal liberty that ignore externalities.

Step-by-Step Solution:
I: Emphasizes rule compliance—legitimate governance rationale when rules serve public interest. Strong.II: Personal discretion overlooks social costs and third-party effects. Weak.III: “Only the head is protected” is irrelevant; protecting the most vulnerable organ still saves lives. Weak.IV: Directly ties helmets to reduced severe/fatal head injuries—core safety rationale. Strong.

Verification / Alternative check:
Jurisdictions with strict enforcement show higher helmet use and lower fatality severity, reinforcing I and IV.

Why Other Options Are Wrong:
Combinations with II/III misclassify weak arguments; “None” ignores I/IV.

Common Pitfalls:
Equating partial protection with no benefit; ignoring public costs of injuries.

Final Answer:
Only I and IV are strong