Which of the Following Claims Does the Text Make About

Which of the following claims does the text make about goodwill messages?

A) It's not important when we send a goodwill message; it's just important that we send it.
B) The longer a goodwill message is, the more effective it will be at achieving its goal.
C) If we find it hard to come up with the right words for a letter, it's just as effective and appropriate to send a signed card.
D) Many people find writing goodwill messages more difficult than writing other kinds of business documents.