18.9k views
24 votes
A reliable source of information on groundwater is always

biased
historic
secondary
up-to-date

2 Answers

12 votes
It’s up to date because of its not up to date it can’t be a reliable source
User Fonseca
by
3.3k points
8 votes
Up-to-Date because if it’s be recorded up to date then it’s accurate
User Jeff Brown
by
3.9k points