Final answer:
The energy levels of satellites in orbit around the Earth are continuous, making it difficult to observe quantized orbital states.
Step-by-step explanation:
The most likely reason why it would be difficult to observe quantized orbital states for satellites orbiting the Earth is because the energy levels of satellites are continuous. In quantum mechanics, orbital states are discrete and quantized, meaning they can only have certain energy levels. However, satellites in orbit around the Earth have a continuous range of energy levels due to factors such as gravitational forces and atmospheric drag. This continuous range of energy levels makes it difficult to observe the quantized states.