Concept:
Liquefied Natural Gas (LNG) agreements are important for energy security and long-term fuel supply. India signs such agreements to meet increasing energy demands.
• LNG is natural gas cooled into liquid form.
• Easier to transport over long distances.
• Used for industrial and domestic purposes.
Step 1: Understand the importance of LNG agreements.
Long-term LNG deals help in:
Energy stability and supply security
for the country.
Step 2: Recall the company involved.
In 2026, the company that signed this agreement with ADNOC Gas was:
Hindustan Petroleum Corporation Limited (HPCL)
Step 3: Check the options.
• BPCL -- incorrect
• IOC -- incorrect
• Reliance -- incorrect
• HPCL -- correct
Step 4: Final conclusion.
Hence, the correct answer is:
\[
\boxed{\text{Hindustan Petroleum Corporation Limited}}
\]