Answer:
Eco-centrism.
Step-by-step explanation:
- The term eco-centrism is a concept that believes in a nature-centered set of principles and values. It justifies that there are no existential differences between between human and non-human beings.
- Since eco-centrists believe in protecting and improving the quality of the nature and environment, they advocate that human activities are the biggest potential threat to nature. Therefore, they adopt means and ways of lifestyle that would cause the least harm to nature and environment.
- Likewise, Gertrude expressing deeply felt environmental concerns and tailoring everything she does and purchases to these beliefs describes eco-centrism.