Logical sequence of mRNA vaccine mechanism

Steps:

• Identify stage 4 as initial vaccine administration via injection.
• Follow with stage 3: mRNA enters cells and codes for viral protein production.
• Proceed to stage 1: cells translate mRNA into harmless spike protein.
• Conclude with stage 2: immune system detects protein and generates response.

Why C is correct:

• Matches the biological order defined by mRNA vaccine process: administration precedes cellular entry, translation, and immunity per CDC guidelines.

Why the others are wrong:

• A starts with translation before administration, violating initial delivery step.
• B begins with protein production absent mRNA delivery, defying sequence.
• D places immune response after translation but skips proper entry order.

Final answer: C