To take the plunge means to commit oneself to a course of action that is momentous or challenging, which is what she is suggesting to do by go ahead with it and taking the risk.
Given the statement "If you still feel the same way about him when the time comes to sign the lease, then go ahead with it and take the risk.", is the statement "If you still feel the same away about him when the time comes to sign the lease, then take the plunge.”" is true?
- Yes
- No
- I don't know