The following are the steps involved in a neural reflex. 1. activation of a sensory neuron 2. activation of a motor neuron 3. response by an effector 4. arrival of a stimulus and activation of a receptor 5. information processing The proper sequence of these steps is (a) 1, 3, 4, 5, 2. (b) 4, 5, 3, 1, 2. (c) 4, 1, 5, 2, 3. (d) 4, 3, 1, 5, 2. (e) 3, 1, 4, 5, 2.