What are the four parts? Can you write the four parts
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>A."Voyager I" was launched by NASA on September 5, 1977" does not contain any errors in punctuation, although italics are not showing up. Nothing should be italicized here though. </span>