Step 1: Analyze the definition provided.
Step 1: The key elements of the definition are:
Furnished by "society" through "appropriate organization".
Protects against "certain risks" (e.g., unemployment, old age, disability, sickness).
For the benefit of its "members".
Step 2: Match the definition to the correct term.
Step 2: This is the classic definition of Social Security. It is a system organized by a government or society to provide economic assistance and protection to its members against various life risks.
Step 3: Differentiate from other options.
Step 3:
"Society security" and "Community security" are less formal terms and not the standard terminology for this concept.
"Health security" is more specific, focusing on protection from threats to public health like pandemics, but it is a part of the broader concept of social security.
The most fitting and standard term is Social Security.