Respond (verb)

1. To answer or reply to a question, a request, or a statement.
2. To take or give a reaction, an answer, or a response to a situation or an action.
3. To react or behave in a certain way to a particular situation or stimulus.
4. To make a reply or answer to a question, a challenge, or a situation.
5. To act or perform in response to a call, a signal, or an occasion.

Origin:

The word 'respond' comes from the latin word 'respondere' which means 'to answer or to reply.'.

Examples:

1. She responded to my question with a nod of her head.
2. The company responded to the customer's complaint with a letter of apology.
3. He responded to the offer with a counter-offer.
4. The audience responded to the performer's music with a standing ovation.
5. The plant responds to light by opening its flowers.