Which strategy would a global health organization most likely use to reduce health effects from air pollution?
o suggest technologies that can be adapted worldwide for different uses.
o monitor respiratory diseases related to air pollution in a small town.
provide health guidelines to a certain region suffering from air pollution.
o work to reduce harmful emissions produced by a local business.

Explanation:

A global health organization only can recur to international mechanisms to act, they don't have enough jurisdiction to operate in a local level, like providing guidelines locally or reduction harmful emission. Their job is to generally act, and the first answer has that characteristics.

By suggestion technologies people can adapt worldwide is the correct answer, because covers all places, world level, otherwise wouldn't be a GLOBAL HEALTH ORGANIZATION.