Answer:
Change their external environment is the correct answer.
Type of neuron that receives messages from the environment is a sensory neuron ie it receives messages from the 5 senses which are used by man to investigate the environment.
question is kind of strange but this depends on personal preference. I would go with the first one bc I'm too lazy lol. But if you're someone that's not, you might pick the last option because you don't want to run out before you don't even start the fire lol