‘The more the merrier’ tests you on phrases using consequences.
We say, when even more people are trying to crowd into a party, 'the more the merrier'!
See how well you do in this Quiz on a variety of expressions and figures-of-speech involving Quantities and Consequences.
Answer 2 says most closely the same thing, but the moral sense of 'owing' (i.e. 'owing their lives') is lacking from this version.