Which signal word shows cause?

as a result
this led to
therefore
since

Which sentences use correct subject-verb agreement? select two options. nancy and jim, the original founders of the gardening club, need more volunteers. one pair of gardening shears has been missing from the gardening shed since last year. the club, which will meet on sundays, require that everyone sign a waiver before joining. the town have generously donated a plot of land for the club to use for at least five years. community gardening have always been an opportunity to grow nutritious fruits and veg