I believe the answer is: c. question
The word 'ponder' mean thinking about a certain thing carefully, even if it took a lot of time to do it. This word is often used in a situation when someone trying to find an answer in an unfamiliar situation. Because of this, it think the word 'question' has a similar meaning with ponder.
The Anglo-Saxon sense of home was very strong because of their religious beliefs and their farming practices. Anglo-Saxons were pagans and they worshipped many gods as well as inanimate objects. Their rituals required going to their homes and spending time with family. Their farming practices also involved the sharing of oxen to plow the lands of all the people living in neighboring farmlands.