Final answer:
The correct past tense form to complete the sentence is 'caught,' making the complete sentence 'The foul ball was caught in the lucky glove of a young baseball fan.'
Step-by-step explanation:
The answer choice that correctly completes the sentence 'The foul ball was __________ in the lucky glove of a young baseball fan' is b. caught. The word caught is the past tense form of the verb catch, which is appropriate to describe something that has already happened, like a ball being secured in a glove. This makes the sentence read as 'The foul ball was caught in the lucky glove of a young baseball fan'. The other options, caughten, catch, and catched, are either incorrect forms or are not in the past tense.