The paragraph break should be seen in option d: He walked in saying hello to everyone he saw, trying to make a good first impression.
A paragraph break is known to be a form of a single line space and it is one that is often seen as a kind of an indentation telling the division between a single paragraph and the next in a body of text.
Paragraph Break is known to be inserted and often used to skip a line and start a new paragraph and this is often done in the second line below the former text.
Note that in the above case, The paragraph break should be seen in option d: He walked in saying hello to everyone he saw, trying to make a good first impression.
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