The nerves of the gi tract are collectively known as the enteric nervous system.

Below is the full question:

The nerves of the GI tract are

(a) collectively known as the enteric nervous system.

(b) part of the central nervous system.

(c) incapable of acting independently of the brain.

(d) all of the above

(a) collectively known as the enteric nervous system.

Explanation:

The enteric nervous system also called the intrinsic nervous system is part of the autonomy nervous system and it is found in the lining of the gastrointestinal (GI) tract.

It is responsible for directing the functions of the GI tract.

The nerves of the GI tract are thus collectively known as the enteric nervous system.

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.