Option 1 -> GSLV-Mk II is designed for heavier geostationary satellites, not used for these missions.
Option 2 -> SSLV is a recent development for small satellite launches, introduced after both missions.
Option 3 -> LVM-3 (formerly GSLV Mk III) is a heavy-lift launcher used for later missions like Chandrayaan-2 and Chandrayaan-3.
Option 4 -> PSLV is India's reliable workhorse launcher that successfully deployed both missions.
Hence, **Option 4: Polar Satellite Launch Vehicle (PSLV)** -> Chandrayaan-1 was launched by PSLV-C11 in 2008, and Mangalyaan was launched by PSLV-C25 in 2013. PSLV has been India's most dependable launcher with an excellent success rate. -> **correct**