Referral: What size of Times New Roman font - 12, 11 or 10 - should I use for main text for paperback book and ebook ...

Readers may want to read my recent post on another blog of mine: What size of Times New Roman font - 12, 11 or 10 - should I use for main text for paperback book and ebook having this blog's (Indian CS & IT Academic Reform) main contents?, https://eklavyasai.blogspot.com/2020/01/what-size-of-times-new-roman-font-12-11.html.