On 24 July your 1912 zone time DR position is LAT 24°28.0' N, LONG 73°46.5' W. Considering their magnitude, azimuth, and altitude, which group includes the three stars best suited for a fix at star time?

Correct Answer: Option D — Spica, Altair, Alioth

For a vessel at 24°N, Spica, Altair, and Alioth provide the optimal azimuthal spread and altitude for a star fix. These stars are selected for their high magnitude and geometric distribution, which effectively minimizes the potential for error when intersecting lines of position during evening twilight observations.