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

All three missions—Axiom-4 (a private mission to the ISS), SpaDeX (a docking experiment for future space stations), and Gaganyaan (India's crewed mission)—are designed to carry scientific payloads that investigate biological and physical phenomena in a micro-gravity environment. Option (B) might be tempting if SpaDeX is viewed only as a technical docking test, but it is a critical precursor to the Bharatiya Antariksh Station, which is dedicated to long-term micro-gravity research. The core concept tested is the scientific utility and research objectives of contemporary human spaceflight and orbital infrastructure programs.