Which of these is an implicit detail from the text

B. Martin has come from the eastern time zone

Explanation:

When a statement is implicit, it is actually suggested or implied but not clearly stated. It is usually understood but assumptions are often used.

From the passage, it was stated that when he look at his time, he discovered his watch was still on Eastern time. The passage didn't clearly state that he is from the Eastern Time Zone. It only suggested and implied that the man came from Eastern Time Zone.

Therefore, the correct answer is Martin has come from the eastern time zone because it was actually one's suggestion.

b. cronkite, a trusted television personality, declared that the war was unwinnable and told the american people that the government had better find a way out

even though it went against everything the news anchors typically stood for, cronkite voiced an opinion and took a stance, telling the us that there was no way they were going to win, the war was going to end in a stalemate.