Meaning of "I'd give my right arm if...

English Idioms and Expressions, Intermediate level

ESL/EFL Test #1 [color=blue]“Up to his ears”, question 9

I’d give my right arm if I could get tickets for that concert.

(a) do absolutely anything
(b) do something dangerous
© do something stupid
(d) do what you want

English Idioms and Expressions, Intermediate level

ESL/EFL Test #1 [color=blue]“Up to his ears”, answer 9

I’d do absolutely anything if I could get tickets for that concert.

Correct answer: (a) do absolutely anything

Your answer was: [color=red]incorrect
I’d do what you want if I could get tickets for that concert.
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what does these sentence mean?

You say that you would give your right arm for something when you want it a lot. In the test sentence, the person wants to go to the concert so badly, they say they would do anything to obtain tickets.

Of course, it’s only a figure of speech, which is, after all, what idioms are.