Task: Question Understanding
Input (English): Question: Why are scientists able to accurately predict when it will be a Full Moon? (A) The time it takes for the Moon to rotate around the Earth never changes, and this, along with the Sun, determines the phases of the Moon. (B) The time it takes for the Earth to rotate around the Sun never changes, and this, along with the Sun, determines the phases of the Moon. (C) The time it takes for the Earth to rotate around the Moon never changes, and this, along with the Sun, determines the phases of the Moon. (D) The time it takes for the Moon to rotate on its axis never changes, and this, along with the Sun, determines the phases of the Moon.?
Output (English): accurately, predict, Full, Moon?