What is the best summary of the passage? a. a boy has been looking forward to his grandmother’s visit, but when her car ends up in the shop, she can’t make the trip. he feels disappointed until his mother suggests that he and his sister take the train to his grandmother’s house. he is hopeful that a four-leaf clover he found will give him good luck on the visit. several obstacles arise that make him worry that the visit will not happen. the boy thinks about his luck with each change of circumstance. ultimately, the boy has good luck, and the visit happens. b. a boy rides the train to visit his grandmother. he prefers riding the train because cars make him feel sick, so he considers getting to ride the train to be good luck. he thinks the good luck comes from a four-leaf clover he found in the park. even when the train stops briefly, the boy feels lucky because it starts moving again quickly and gets him to his grandmother safely. c. a boy wants to visit his grandmother. he picks a four-leaf clover in hopes that it will give him good luck and make the visit happen. his mother tells him that his grandmother cannot come to pick him up, but that turns out to be good luck because it means he gets to ride a train. the boy gets to his grandmother’s house and feels lucky. d. a boy and his sister visit their grandmother together. they take the train and are pleased to find out that their grandmother has made cookies. this is a welcome discovery because along the way, they encounter several obstacles that make them worry that the visit will be either cancelled or delayed.