How did she respond to receiving flowers?

The answer is appropriate because it directly indicates a positive and appreciative response to receiving flowers. When someone receives flowers, a common and expected reaction is to express gratitude for the thoughtful gesture, which is conveyed in the answer. Thanking someone for bringing flowers shows that the recipient acknowledges the effort and kindness behind the act, reflecting a warm and welcoming attitude.

The other options present responses that imply a lack of appreciation or interest. Ignoring the gesture suggests a complete disregard, while being indifferent also indicates a lack of emotional engagement. Suggesting to return the flowers implies that the recipient does not value the gift at all, which stands in contrast to the idea of responding with thanks. Thus, the choice of thanking for the flowers embodies the most suitable and positive reaction to receiving such a gift.