Latter-day Saint missionaries are trained to challenge people to read the Book of Mormon and then to ask God in prayer if, it is true. Moroni 10:4-5 “And when ye shall receive these things [the Book of Mormon], I would exhort you that ye would ask God, the Eternal Father, in the name of Christ, if these things are not true; and if ye shall ask with a sincere heart, with real intent, having faith in Christ, he will manifest the truth of it unto you, by the power of the Holy Ghost. And by the power of the Holy Ghost, ye may know the truth of all things.”
Another scripture used is from:
“But, behold, I say unto you, that you must study it out in your mind; then you must ask me if it be right, and if it is right I will cause that your bosom shall burn within you; therefore, you shall feel that it is right.”Doctrine and Covenants 9:8
I see some problems with those challenges.