Thumba was chosen as the ideal site for rocket launch due to the presence of _______.

Correct option is B

The correct answer is (b) Equatorial electrojets.
· Thumba, located near Thiruvananthapuram in Kerala, India, was chosen as the site for the Thumba Equatorial Rocket Launching Station (TERLS) due to the presence of equatorial electrojets.
· Equatorial electrojets are narrow streams of electric currents flowing eastward in the Earth's ionosphere near the magnetic equator.
· These currents are important for scientific research related to atmospheric and ionospheric studies.
· The proximity to the magnetic equator allows for the study of these electrojets, making Thumba an ideal location for rocket launches and scientific experiments.
· Thumba's location has enabled India to conduct significant research in space and atmospheric sciences since the establishment of TERLS in the early 1960s.