question:  What does Jery do best?
context: MASTER SPY OF THE RED PLANET Jery Delvin had a most unusual talent. So when the Chief of World Security told him that he had been selected as the answer to the Solar System's greatest mystery, Jery assumed that it was because of his mental agility. But when he got to Mars to find out why fifteen boys had vanished from a spaceship in mid-space, he found out that even his quick mind needed time to pierce the maze of out-of-this-world double-dealing. For Jery had become a walking bomb, and when he set himself off, it would be the end of the whole puzzle of THE SECRET MARTIANS—with Jery as the first to go! While everyone else looked forward variously to becoming firemen, cowboys, and trapeze artists, Jack was devouring every book he could get his hands on, figuring that "if I put enough literature into my head, some of it might overflow and come out." After sixteen years of education, Jack found himself teaching high school English in Chicago, a worthwhile career, but "not what one would call zesty." Oddly enough, it worked out, and he now does nothing else. He says, "I'd like to say I do this for fulfillment, or for cash, or because it's my destiny; however, the real reason (same as that expressed by Jean Kerr) is that this kind of stay-at-home self-employment lets me sleep late in the morning." "Jery Delvin?" said the one on my left, a note of no-funny-business in his brusque baritone. "Jery Delvin," he read, musingly and dispassionately. Honest, sober, civic-minded, slightly antisocial...." He looked at me for a long moment, then picked up that brochure again, and said, without referring to it, "Jery Delvin, five foot eleven inches tall—" "Yes, but read me the part where it says why I was picked," I said, a little exasperated.
output:  come up with the best ways to sell products
options:  interplanetary security  come up with the best ways to sell products  work closely with women in advertising  develop products for the advertisement company