Read the list of words.

brain, glands, motor neuron, movement, muscles, sensory neuron, stimuli

the word belongs in a different group than all of the other words in the list.

just tryna figure out did i put it in wrong or something or the answer just wrong

it is because glands are not from outer body coordination

Explanation:

brain,motor neuron,movement,etc are components that involve in coordination like when somebody accidentally touches a hot surface or hear the sound of the door bell

while the glands involve in inner body coordination such as maintaining blood pressure,glucose level in blood etc

glands synthesis hormones that help keep the body in optimal condition

hope this help

they had the law tat factories that produces smoke cannot be built near residential buildings.

building of proper sewage system was done to ensure that the waste is carried away from the humans so that they do not get diseases from it.

also they built water systems to provide water in those areas which are drought prone.