⚠️PLEASE HELP!!⚠️ Which of these is an inappropriate shift in verb tense?

Answer:
A. walks up
Explanation:
It should be "walked up" because this sentence is in the past tense.
Answer:
C one is the inappropriate shift in verb tense.
Explanation:
cause you just can't write "Are you ok"!!!! instead of writing that you can either write "I asked " after that you can add " Are you ok"
This is me genuinely trying to make you understand!!!