The correct answer is C. collect data.
Sensors are devices that collect data from the environment. In a smart grid architecture, sensors are used to collect data on things like power usage, energy consumption, and environmental conditions. This data is then used to improve the efficiency of the grid and to provide better services to customers.
Option A is incorrect because sensors do not store data. Data is stored in data centers or other storage devices.
Option B is incorrect because sensors do not manage data. Data is managed by software applications.
Option D is incorrect because sensors are not responsible for security. Security is a separate concern that is handled by security devices and software.