Question 98Navigation Problems

The correct answer is D) Spica, Sabik, Vega. The key factors in determining the best stars for a fix at this position and time are the stars' magnitude, azimuth, and altitude. Spica, Sabik, and Vega are well-suited because they have a high magnitude (brightness), are in favorable positions in the sky (azimuth), and are at a suitable altitude for an accurate celestial navigation fix. The other answer choices are not as optimal. Antares, Polaris, and Altair may not be as bright or in the right positions. Jupiter, Saturn, and Polaris would not provide an ideal three-star fix. Arcturus, Jupiter, and Denebola are also not the best combination for the given conditions.