To overcome blind spots while driving, the best approach is:
A. Look over your shoulder before changing lanes.
This method allows you to physically check the areas that may not be visible in your mirrors. While options B and C may provide some assistance, they are not as effective as option A. Option D, using a bigger rear view mirror, is not a reliable solution since it can still miss certain blind spot areas. Therefore, checking your blind spots by looking over your shoulder is the most effective way to ensure safety when changing lanes.