21. Which of the following is considered an appropriate question to ask on an application form? a. "Are you at least 18 years old?" c. "When was your last physical exam?" b. "What language do you commonly use?" d. "Please list any hobbies you have." 22. Which of the following is true about letters of reference? a. Positive comments are seldom given. b. A long letter is more indicative of a positive attitude toward the applicant than a short letter. The same information is obtained from each applicant. d. Scoring of the letter is objective and not based upon the reader's interpretation. c