RLV-T D of ISRO, an unmanned test bed, stands for:

Correct option is C

The correct answer is (c) Reusable Satellite Launch Vehicle Technology Demonstrator.
· RLV-TD stands for Reusable Launch Vehicle-Technology Demonstrator, which is a part of ISRO's initiative to develop a reusable space vehicle.
· The project aims to reduce the cost of access to space by developing a launch vehicle that can be used multiple times, similar to the concept of an airplane.
· The first test flight, known as HEX-01 (Hypersonic Flight Experiment 01), was successfully conducted on May 23, 2016.
Information Booster:
· The RLV-TD consists of critical technologies such as autonomous navigation, guidance and control, and reusable thermal protection system.
· The development of reusable launch vehicles is crucial for making space missions more cost-effective and sustainable.