Final answer:
The reticulospinal tract provides subconscious regulation of upper limb muscle tone and movement and is part of the somatic nervous system pathway(option c).
Step-by-step explanation:
The correct answer is c) Reticulospinal, somatic nervous system.
The reticulospinal tract provides subconscious regulation of upper limb muscle tone and movement and is part of the somatic nervous system pathway. This pathway controls voluntary movements of skeletal muscles and is responsible for coordinating postural muscles in broad movements of the body. The reticulospinal tract also influences muscle tone and contributes to autonomic functions.