The correct answer should be C) bias
If the person works for a national energy company there is high chance that the person would be a bit biased towards installing the new systems. This should definitely be checked.
If I were stranded on an island and could only have one item. I would want a yacht.
I’ll need the answers and passage to answer this.
I believe the best choice is A) He told his friends he was the best. This is if they're asking if it went well mentally. If they're asking if it went well physically, then the answer is B. Hope this helps ;)