Correct Option (d)
All three statements correctly identify areas where GPS technology can be utilized.
- Mobile phone operations: GPS is an essential feature in smartphones, facilitating navigation applications, ride-sharing services, and precise geolocation for emergency alerts. It also supports features such as the DoT-mandated panic button, contributing to personal safety and real-time tracking capabilities.
- Banking operations: GPS is increasingly employed by banks, particularly within mobile applications. Its uses include ATM and branch locators, and enhancing security through location-based fraud detection. It aids in authenticating online transactions by verifying the customer's geographical location against the transaction origin, thereby mitigating fraudulent activities.
- Controlling the power grids: GPS plays a critical role in the management of modern power grids, especially smart grids. It provides highly accurate time synchronization, which is vital for the coordinated operation of distributed energy resources. Devices like Phasor Measurement Units (PMUs) and smart meters utilize GPS signals to precisely timestamp data, enabling real-time monitoring of voltage and current fluctuations across vast geographical areas for grid stability and efficiency.
Incorrect Options
Options (a), (b), and (c) are incorrect as they do not encompass all the valid applications of GPS technology mentioned in the statements. GPS finds extensive utility across mobile phone operations, banking, and power grid management.