Question

aspect of global security
the united nations works as a central hub for many different types of global - related issues. in addition to the un, there are many world organizations that contribute to global security by handling military concerns, economic stability, trade relations, and responses to health crises.
nato
nato, the north atlantic treaty organization, is a military alliance whose member nations work together for mutual protection.
opec
opec, the organization of the petroleum exporting countries, is an economic organization for oil - producing countries. in the 1960s and 1970s, several oil - producing nations decided that they would be better off working together to manage petroleum resources than trying to compete with each other. because the world needs oil, opec holds a great deal of political power.
nafta and the wto
international agreements like the north american free trade agreement (nafta) and groups like the world trade organization (wto) promote economic security through lowering tariffs and regulating trade. these measures are intended to open trade between nations and benefit all nations involved.
health and global security
when health crises impact the world, the united nations will step in to help. another organization, doctors without borders, sends doctors to help areas in crisis that need medical care.
what kind of organization is nato?
military alliance
trade organization
international health taskforce

Explanation:

The text states NATO is a military alliance for mutual - protection.

Answer:

A. military alliance