Respuesta :

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!!!