Select the correct and entire main clause of the sentence.
since the football team was good this year, the homecoming game was sold out.
the main clause is

c. with one finger is the answer

the answer would be: it explains that at least one son must join the church

the expression ''as the tithe of his sons'' indicates how his father intended for at least one of his sons to serve the church. this phrase demonstrates that his father offered him as a last resort since none of his brothers chose to serve the church.

hope this answer you: )!