The only effective way to respond is to SHOW how you have done that in the past for other employers or client. No, you just don't say, "I am a problem-solver."
Here is an example of SHOW:
"When traffic was declining on all the media firm's sites, I parachuted in as a consultant. Within 36 hours traffic began increasing. The major problem was that its signature "snarky" tone had gone out of style."
If you have examples of materials you leveraged during those crises, provide the links or present as attachments. No, don't include them all. Instead, indicate that you respect the employer's or prospect's time and are just including representative samples.