Answer:
d. neurotransmitter
Explanation:
In this definition, Anna was very close to successfully describing long-term potentiation. However, her definition is inaccurate because she mistook neurons for neurotransmitters. Long-term potentiation is the strengthening of synapses (or the enhancement of communication) between two neurons. These patterns of synaptic activity produce a long-lasting increase in signal transmission. This phenomenon occurs thanks to synaptic plasticity, which is the ability of chemical synapses to change their strength.
I believe the answer is: scientific stage
In the scientific stage of societal develoment, people start to rely more on empirical evidence to drive their decision rather than religion or any forms of diety. In this stage of development, innovations would start to flourish and society tend to keep inventing things that increase their prosperity.
