What is a disease of the joints that especially affects the hips, knees, neck, hands, and lower back?

Amytrophic lateral sclerosis (ALS) destroys the motor neurons of the lateral motor tracts. this leads to

a. upper and lower (alpha) motor neuron death b. sensory and motor loss c. cognitive slowing and motor loss d. upper motor neuron death only and thus intact spinal reflexes

Jung considered libido as:

a. a broader and more generalized form of psychic energy. b. the primitive and carnal desires inherent in all individuals. c. an individual's urge to engage in sexual activity. d. a series of developmental stages within an individual.