Which is the correct number when rounding 0.04032 to 2 significant figures?

Which is the correct number when rounding 0.6984 to 2 significant figures?

Which is the correct number when rounding 5.027 to 2 significant figures?

Which is the correct number when rounding 7.860 to 2 significant figures?

Which is the correct number when rounding 3206 to 2 significant figures?

Which is the correct number when rounding 485 to 2 significant figures?