we can't get the question terminology but ,we can give the basic answer about this ,after completion of the bsc degree what are you passionated with ,can go with that,

msc emergency critical care has no entrance exam its eligibility is based on performance in bachelor's degree with minimum 55%marks and degrees like bsc mbbs,bams,bds,bpt,bhms are eligible yes you had a scope too

while msc anesthesia this is professionally oriented course involving specialization in critical care

as if you complete your bsc graduation you can go with either msc or pg or some diploma certified courses many are available.

all the best .