Consider the following space missions: I. Axiom-4 II. SpaDeX III. Gaganyaan How many of the above space missions encourage and support microgravity-related research?

Axiom-4 is a private crewed spaceflight mission to the International Space Station (ISS) by Axiom Space; Indian astronaut Shubhanshu Shukla is part of the mission to conduct microgravity-related research experiments. Gaganyaan is India's first human spaceflight mission planned by ISRO, which will conduct microgravity experiments in low Earth orbit. SpaDeX (Space Docking Experiment) is an ISRO mission demonstrating in-space docking technology between two small spacecraft; while it is a technology demonstrator, it is not primarily focused on microgravity research. Hence only Axiom-4 and Gaganyaan support microgravity-related research.