Answer: Principle of motion economy.
Explanation: principle of motion economy developed by Frank and Lillian Gilbreth are guidelines to help determine the work method, workplace layout, tools, and equipment.
The aim of this is to help in identifying and replicating one best way to complete a task and also minimize the physical and perceptual loads imposed on people engaged in that task.
Answer:
balance sheet filter
Explanation:
Balance sheet filter falls under the filter theory of mate selection which suggests that people use a filtering mechanism that enable them sort out a potential mate from a "pool of candidates.
Balance sheet filter is a method by which individuals select mates whereby individuals look out for reciprocity. This person looks at what someone can offer that he cannot find in anyone else.
As of 2009, Sunni Muslims constituted 87–90% of the world's Muslim population-
the Shia believe that leader is called an imam and this "caliph/imam" should be a direct descendant of Mohammed-
and I have no clue on the last one