Final answer:
Gusts of wind below 5 knots are not reported in METAR weather reports; therefore, a gust of 3 knots would not be included.
Step-by-step explanation:
The correct answer to the student's question is B) No, gusts below 5 knots aren't reported. In aviation weather reports, notably METAR reports, wind speed and direction are given with great importance. However, gusts are only reported if they reach a certain threshold. For gusts to be included in a METAR report, they must typically be 5 knots or greater than the average wind speed. Therefore, a gust of 3 knots would not typically meet the reporting criteria and thus would not appear in a METAR.