Dear

As per your query you may consider these challenging field

Nanotechnology
Food technology
Aerospace engineering
Environment science
Wildlife science
Neuroscience
Solar engineering
Power engineering
Genetic science
Microbiology
Bio chemistry
Psychology ( clinical psychology)

All the Best

U have great opportunity neet.jee,bsc,nest,bhm,CA,many more

Choosing a course after 12th is based on your interest.
You can go for competitive exam like NEET or JEE Main.

If you are interested in Biology go for medical stream and if you are interested in maths you can go for engineering stream. Both the courses have good prospective in the future.

Good Luck!!