Question 1987Navigation General

The correct answer is A) Neap. When the moon is at first quarter or third quarter phase, the tides will be neap tides. Neap tides occur when the gravitational pull of the sun and moon are perpendicular to each other, causing a weaker gravitational pull and resulting in smaller tidal ranges. This is in contrast to spring tides, which occur during full moon and new moon phases when the sun and moon's gravitational forces are aligned, causing higher high tides and lower low tides. The other options are incorrect - perigean and apogean tides refer to the distance of the moon from the Earth, not the lunar phase, and spring tides are not the correct answer for the first or third quarter moon phases.