Answer: D) people whose passions have led them astray.
Step-by-step explanation: In the given excerpt from “Elegy Written in a Country Churchyard” by Thomas Gray, we can see the description of the types of people that lie among the forefathers, the speaker gives the idea that they are people whose passions have led them astray, we can know that, by reading the line "Some heart once pregnant with celestial fire" this imagery conveys the idea of passion.