Well, nothing is capitalized.
The word <em>we </em>is the subject. The phrase <em>solemn vigil </em>is the direct object. The phrase <em>at the funeral </em>is adverbial modifier.
In this passage, almost nothing. I suppose because at 41 he was hale and healthy until he took a job on a railway babysitting a box of guns on a 200 mile rail journey, he lost his health. But to conclude much more is a travesty and the answer should not be anything.
So you should probably choose B. He is hale and hardy because (it is inferred ) he has avoided marriage.
He had worn out <span>shorts, a sunburn, his hair was longer, and he had lighter hair.</span>