The 2% of the insects will begin to reproduce and grow their population exponentially and in time enable the population to recover. This is if the population is large enough to enable random mating. The 98% reduction in population drastically reduces competition for the remaining individuals hence giving them abundant resources for them to thrive.
From lowest to highest hierarchy it would be: planet, star, solar system, galaxy.
I can’t really see the numbers but it seems to be 30ml
Anything can come out of that but I think type b might be more possible to happen.