Question 100Navigation Problems

The correct answer is A) Hamal, Rigel, Alphard. The key factors in determining the best stars for a fix at the given position and time are the stars' azimuth, altitude, and magnitude. Hamal, Rigel, and Alphard are well-suited because they have high altitudes, favorable azimuths relative to the vessel's course, and bright magnitudes that make them easily observable. The other answer choices do not provide an optimal combination of these factors. For example, Arcturus, Regulus, and Sirius (choice B) may not be as well-positioned in the sky or as bright as the stars in the correct answer.