Choose the idiom/phrase that can substitute the highlighted group of words meaningfully:
For certain, this is the best pizza in town.

The correct answer is (b) Beyond a shadow of a doubt.
Explanation:
The idiom "beyond a shadow of a doubt" means without any uncertainty or absolutely certain. This phrase perfectly replaces the highlighted part "for certain" in the sentence.
Meanings of all options:
· Through thick and thin: In good and bad times.
· Beyond a shadow of a doubt: Without any uncertainty.
· Benefit of doubt: Assuming someone is innocent or correct in the absence of proof.
· Off on the wrong foot: To make a bad start.
Correct sentence:
" Beyond a shadow of a doubt, this is the best pizza in town."