I'm pretty sure they were good at breathing
C) Civil war left Egypt weak and poorly defended, and Egypt fell to the Macedonian conqueror Alexander the Great.
since it is decline, it has to be defeated
hope this helps
Answer: The James-Lange theory
Explanation: The James-Lange theory argues that emotional reactions felt in human stirs from physical interpretation attached to the physiological (relates to the way or manner in which the bodily parts of an individual functions) response which emanates due to an external or environmental stimulus.
In essence, James-Lange theory proposed by William James and Carl Lange opines that physical interpretation of physiological responses determines emotional reaction.
In the scenario above, Harry wants to use physiological response and physical interpretation attached to facial smile will translate into an emotional state of being happier.