Animals' feelings are very difficult to measure, which make the hedonistic view hard to work with on a practical level.

(单选)人类行为主要受到大脑内两个基本系统的作用,这两个系统是(<br/>)。 A: 奖励系统(Rewarding<br/>System)和损失厌恶系统(Loss-Aversion<br/>System) B: 损失厌恶系统(Loss-Aversion<br/>System)和享乐系统(Hedonistic<br/>System) C: 奖励系统(Rewarding<br/>System)和风险厌恶系统(Risk-Aversion<br/>System) D: 风险厌恶系统(Risk-Aversion<br/>System)和享乐系统(Hedonistic<br/>System)