Final answer:
The possible Right Ascension for a full Moon in late May is 16 hours, as it is opposite the Sun, which is around 4 hours of Right Ascension during that time of year.
Step-by-step explanation:
When considering the Right Ascension for a full Moon that occurs in late May, we have to think about the Moon's position in relation to the Sun. Since a full Moon rises at sunset, the Right Ascension will be opposite the Sun. Knowing that the Sun is roughly at the Right Ascension of 4 hours in late May, the full Moon would therefore be around the Right Ascension of 16 hours to be opposite the Sun in the sky. Therefore, among the options provided, 16 hours is the possible Right Ascension for a full Moon in late May.
The Right Ascension is a measure of an object's position in the sky based on the equatorial coordinate system. The Right Ascension of a full Moon depends on the time it occurs in a specific location and date. In late May, the full Moon can have different Right Ascensions, and among the given options, 22 hrs is a possible Right Ascension for a full Moon.