Answer:
C. an attack no one is considered an attack on all
Step-by-step explanation:
Securitization can be defined as a strategic process which typically involves setting standards, rules and regulations that protects and facilitate the territorial integrity of a particular location or business.
Basically, it is very important and essential to guard against potential enemies by ensuring that your tactics are kept secret and unknown to outsiders. Thus, all of your team members should be guarded and well protected.
Hence, the statement which best describes the idea of collective security is that, an attack no one is considered an attack on all.