Which one is better for CLAT preparation?? (a) Career Launcher (b) CLAT Possible

Doesn't matter, which coaching you are going to choose. Ultimately you have to it with yourself.
According to me you should do your preparation through google.
There are different channels for different topics:
1. StudyIQ. For current affairs
2. FantasticFundas.  For history and static gk.

For legal reasoning and english you should refer
Either "universal's guide to CLAT & LLB" or "Lexis nexis".
I suggest you that before enrolling for coaching you should ones go though these.
If these prove to be helpful then please reply