Which of the Following Is an Example of the Fact

Which of the following is an example of the fact that people are prone to inertia?

A) an individual deciding to continue with an insurance policy even after its premium rate increases and alternative policies are available in the market
B) an individual deciding to decrease the consumption of a commodity when the utility derived from it falls
C) an individual deciding to opt for additional savings schemes apart from those set as the default by employers
D) an individual replacing high-power electrical lights and appliances with low-power ones to reduce electricity consumption per month
E) an individual visiting a new grocery store for her monthly grocery shopping