How many years? 05/25/2018 – by Mod_GuideK 0 Regulation B defines "elderly" as having attained an age of how many years? A. 55 B. 59 1/2 C. 62 D. 70 1/2 SHOW ANSWERSCorrect Answer: C Explanation/Reference: Download Printable PDF. VALID exam to help you PASS.