The single most important factor contributing to the modern-day extinction of hundreds of species on earth is

a)
acid rain.

b)
invasive species.

c)
greenhouse effect.

d)
habitat destruction.

The correct answer would be option D. Habitat destruction.

Habitat destruction contributes the most in the loss of biodiversity these days.

More and more space is required to fulfill the demands of increasing human population.

More and more natural habitats are being destroyed for building houses, agriculture, building dams, roads, pipes, industries et cetera.

Consequently, a large number of wild species die due to lack of resources.

satellites are frequently used to make observations of the orbit on earth