Which of the following is true?

A) The ecosystem level is promoted by initiatives that sustain the planet.
B) The microsystem concerns overarching institutional patterns, such as economics and politics.
C) The exosystem level focuses on social structures, such as community or mass media.
D) The macrosystem level focuses on a person's immediate social environment, such as school or work.

The ecosystem level pertains to the entire planet and initiatives that sustain it would promote this level.

Option B is incorrect because the microsystem pertains to immediate surroundings and relationships, and not large institutional patterns like economics and politics.

Option C is also incorrect because the exosystem pertains to indirect social structures like the workplace, and not community or mass media.

Option D is incorrect as it refers to the mesosystem, the level that focuses on the interaction between an individual's immediate environments such as home and school.