1. gave an answer or reply to something
Usage: past tense of respond
2. reacted to a situation or stimulus
Usage: past tense of respond
3. showed improvement as a result of treatment or action
Usage: past tense of respond; medical or therapeutic context

Examples

• She responded to his email within an hour.
• The audience responded with loud applause.
• He responded quickly to the emergency call.
• The patient responded well to the new medication.
• The company responded to customer complaints by changing their policy.
• The fire department responded to the alarm immediately.
• She responded with a smile when he complimented her work.