Concept:The word "only" is an adverb, so it affects the word it is placed near in the sentence.
Explanation:In "I only visited Chidi", the word "only" appears immediately before the verb "visited".
Therefore it limits the action "visited", not the person "Chidi" and not any companion.
This means the only action I carried out was visiting Chidi.
I did not do anything else apart from that visit.
If the sentence meant that I went alone, it would say "I visited Chidi alone".
If it meant I saw no one else, it would say "I visited only Chidi".
So the meaning is that visiting Chidi was the only thing I did.
Answer:B. I didn't do anything asides visiting Chidi.