The animal source which provides the most protein for human being is_______.

A．reduce pressure on fish populations
B．threaten the world's annual catch
C．increase government's investment
D．cost tens of thousands of fishermen's jobs

A．depend on their own financial resources
B．invite the banks to provide long-term finance
C．borrow large sums of money from friends and people they know
D．rely on the population as a whole for finance