Final answer:
The reflexive escape behaviors controlled by the Earthworm Median Giant Fiber are curling and locomotion, facilitated by their hydrostatic skeleton through peristaltic muscle contractions.
Step-by-step explanation:
The reflexive escape behaviors controlled by the Earthworm Median Giant Fiber include B) Curling and C) Locomotion. Earthworms rely on their hydrostatic skeleton to move, which involves peristaltic muscle contractions that extend and shorten their body. This process allows earthworms to either burrow into the soil or move along surfaces. When threatened, an earthworm can quickly shorten its body and curl up as a defensive behavior, a response also connected to its median giant fiber system. Earthworms do not use stretching as a reflexive escape behavior, and while they do burrow, this action is not categorized as a reflexive behavior in response to immediate threats but rather a characteristic movement pattern.