Which system has a central government and local units that implement the central government's decisions?

Unitary system

Explanation:

There are three types of government systems :

Unitary System, Federal system, Confederate system

Among the three, the Unitary system is the one where the Central government has the complete power. The local units might not even exist in such a system and even if they do, their only power or job is to implement the decisions that have been taken by the Central Government. Countries like China, United kingdom and France run the governments on Unitary symmetry.

i believe

clean air is essential for health and survival

clean air provides nitrogen gas for plant respiration

clean air supplies oxygen that enables living organisms to breathe

hope this

i am brianly

sorry if this doesn't

even though you have attached neither the chart nor the generalizations, i have located them online. the right answer is d, since they are asking you about a generalization. you can only infer from the chart that between 2008 and 2009 the number of employed workers decreased significantly (from over 115 millions to 107 millions approximately), which signals some type of economic crisis.