Question

which of lauras misquoted idioms from \daughter of invention\ is intended to mean that it makes no difference to her?
“green behind the ears,”
“when in rome, do unto the romans.”
“its half of one or two dozen of another.”
“...one of these days my ship would pass me by in the night!”

Explanation:

The idiom "It's half of one or two - dozen of another" implies that two alternatives are equivalent or that it doesn't matter which one is chosen. It conveys the idea that it makes no difference.

Answer:

"It's half of one or two dozen of another."