The most common lever in the human body is the a. first class lever b. second class lever c. third class lever d. fourth class lever

The most common lever in the human body is the .
C. third class lever.

-The inter-support lever
-The Inter-resistant lever
-the inter-powerful lever or inter-motor

Major sources of stress, such as a death or divorce, problems in family relationships, job loss, school, and substance abuse, can trigger or aggravate some mental disorders in some people. but not everyone who goes through those things develops a mental illness