Explanation:

* **Axiom-4:** These are commercial missions to the International Space Station (ISS), which is a dedicated platform for micro-gravity research. Therefore, Axiom-4 directly supports micro-gravity research. * **SpaDeX:** This is ISRO's Space Docking Experiment, primarily a technology demonstration mission. While it operates in a micro-gravity environment, its main objective is not to conduct micro-gravity research itself, but rather to test a technology that could enable future space stations or platforms for such research. * **Gaganyaan:** This is India's human spaceflight mission. A significant objective of human spaceflight missions is to conduct scientific experiments in the micro-gravity environment of space, including studying its effects on the human body and various materials. Therefore, Gaganyaan will encourage and support micro-gravity research. Thus, Axiom-4 and Gaganyaan directly encourage and support micro-gravity research.