Answer:
B. When the government doesn't protect their natural rights.
Step-by-step explanation:
Natural rights are rights each and every person is "born" with, and those rights should not be infringed. If it is infringed, the people who are under oppression has the right & obligation to defy the current government and replace the government if need be with a government that would protect their rights. However, remember that there is not a government who is able to do that perfectly, and that there will always be faults. This is specifically in place to change governments who are actively taking part in infringing the rights, and not looking after the people.
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