23. Which is the cause of tropic tides?

Tropic tides result from the Moon's maximum declination, which creates the greatest difference between consecutive high or low tides. The Moon's declination, its angular distance north or south of the celestial equator, determines tidal patterns; maximum declination produces tropic tides, while 0 declination results in equatorial tides. Perigee affects tidal range, not the type of tide.