The correct answer is Option A: Testimonial. Here's why: - A testimonial is a formal statement that attests to someone's character, qualifications, or achievements-often used as a letter of recommendation. - An affidavit, by contrast, is a sworn written statement used mainly in legal contexts. - Manuscript and document are general terms that don't specifically relate to testifying to someone's character or qualifications. Thus, Option A fits the description perfectly.