Which of the following structures transmits information from the muscles to the brain?

Efferent neurons, also known as motor neurons, carry signals away from the brain and spinal cord to the muscles and glands. Their primary function is to initiate muscle contraction and regulate glandular activity, rather than transmitting information from the muscles to the brain. Thus, they do not serve the role described in the question.

Motor neurons are a subtype of efferent neurons that specifically target muscle fibers to elicit movement. While they are crucial for executing motor commands originating in the brain, they do not transmit information from the muscles back to the brain, which is the primary focus of the question.

Interneurons act as connectors or relay neurons within the CNS, processing information between afferent and efferent neurons. They play an important role in reflex actions and complex processing but do not directly transmit information from the muscles to the brain as described in the question.