Enacting legislation that restricts a chemical suspected of being harmful while there is still scientific uncertainty about that chemical is an example

a. an anthropocentric worldview.
b. a biocentric worldview.
c. the precautionary principle.
d. technology leapfrogging.
e. an incentive-based approach.

Answer is C, the precautionary principle

Explanation:

The precautionary principle is finding a way to cope with likely risk that can occur where scientific understanding is still in process.

It can also be explained as of being conscious when involving in an activity that raises threat of harm to the environment by taking precautionary measures.

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.