The question asks to identify the 'Maharatna' public sector enterprise (PSE) from the given options.
The 'Maharatna' status is the highest category of PSEs in India, granted by the government to select companies with significant operational autonomy and financial power. Companies with this status can invest substantial funds in projects independently.
Let's examine the status of each listed company:
Based on the official classifications of Indian Public Sector Enterprises, Bharat Heavy Electricals Limited is the only 'Maharatna' company listed among the options.