Hi -- these really aren't either/or words... they mean two different things.
1) Reflect - This can be a person (This really reflects my personality) or a thing (These clothes reflect my good taste). Think about a mirror, which reflects the person staring at it.
2) Respond - This can mean to answer, for example a question or a survey. (Can you respond to my father's question? Can you provide a response to our survey?) It can also be a response to a situation. (The fire department responds to emergencies. The hospital responded to a need for more doctors in the city.) These last two examples mean that someone took an action. Hope this helps.