When the declination of the Moon is 0°12.5'S, you can expect some tidal currents in Gulf Coast ports to __________.

Correct Answer: Option C — become weak and variable

In USCG General Navigation principles (Bowditch, Light Lists, and Coast Pilots), regarding 'When the declination of the Moon is 0°12.5'S, you can expect some tidal currents in Gulf Coast ports to', the verified fact is: 'become weak and variable'.