No, it is not a correct sentence. The mistake is in the word <em />worse - you need to use the superlative (final) form of the adjective. Bad - worse - worst. So the correct answer would actually be: Deciding to go to Barcelona was the worst decision I ever made.
<span>Repeating tests usually leads to </span><span>more confidence in the results because more you repeat more precised result u will get so i conclude option C is correct hope it helps</span>