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The Moon goes through different phases during its orbit around the Earth, completing one full cycle approximately every 29.5 days. This cycle starts with a new moon, when the Moon lies between the Earth and the Sun, making its illuminated side invisible from our planet.

Most months in the Gregorian calendar have 30 or 31 days, long enough to include at least one new moon. However, February is shorter, having 28 days in common years and 29 days in leap years. Because the lunar cycle is slightly longer than February, it is possible—though rare—for this month to pass without a single new moon.

This situation occurs when a new moon appears late in January, and the next one falls early in March, leaving February without this lunar phase. On the other hand, months with 30 or 31 days will always have at least one new moon and sometimes even two, a phenomenon known as a black moon.

This question belongs to Everyday Science, as it explains a natural phenomenon that is part of daily life—the lunar cycle and its relationship to our calendar. Understanding these cycles is important because the Moon affects tides, eclipses, and traditional timekeeping, making it an essential concept in basic astronomy and science.

Thus, the month that can lack a new moon is February, making option B the correct answer.