Question

which sentence is missing a comma?
mary ran a mile in 5.6 minutes.
mary will you please hand me my coffee?
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Explanation:

To determine which sentence is missing a comma, we analyze each:

• "Mary ran a mile in 5.6 minutes." has no comma - need, as it's a simple statement with no need for a comma in this structure.
• "Mary will you please hand me my coffee?" is a direct address (talking to Mary), so a comma should follow "Mary" (i.e., "Mary, will you please hand me my coffee?"). So this sentence is missing a comma.

Answer:

B. Mary will you please hand me my coffee?