Read the sentences. I could not understand why my friend did not say “hello.” Was he upset with me for some reason? What could I have done wrong?

The tone created by the punctuation used in the sentences above could BEST be described as
confused.
excited.
scared.
annoyed.

Confused.

Explanation:

Punctuation such as quotation marks, question marks, exclamation, or commas can help readers understand the tone or mood of the speaker or statement. They help identify how the sentence must be read.

In the given scenario, the speaker feels confused about why his friend did not say "hello" to him. And by putting the greeting "hello" within quotations helps us understand the implication of the greeting. And by refusing to greet his friend, the speaker is left confused and began to question whether his friend is upset or if he had done anything wrong to him.

Thus, the tone is confused.