Final answer:
The escape speed of a satellite located at the Moon's orbit around Earth is 2.38 km/s, assuming the Moon is not nearby.
Step-by-step explanation:
The question asks about the escape speed of a satellite located at the Moon's orbit around the Earth, assuming the Moon itself is not nearby. According to provided information, the escape velocity from the Moon is 2.38 km/s, which is much less than Earth's escape velocity of 11.2 km/s. Therefore, even though the satellite is at the Moon's orbit, the escape velocity that applies would be that of the Moon's due to its locality. Hence, the correct answer is (a) 2.38 km/s.