Ihave a question about proper grammar. am i suppose to capitalize the first word of a line because in my word document it keeps automatically capitalizing. it is not the first word in a sentence, just the first word to be written/typed on a line.

On one of his many outings through the brobdingnagian countryside, gulliver walks on a small path through a field. during this walk on the small path, how does gulliver get dirty? a. the dwarf throws at gulliver, b. the queen of brobdingnagian steps on gulliver, c. gulliver gets caught in a rainstorm, and d. gulliver falls in cow dung.