Out of the four options that you selected the most flourishing scopes will be available in the fields of MSc Microbiology. Options like Food Technology is also good, you will get jobs of median salary bit with microbiology you can expect your salary from 2.4-5 LPA. If you get a Government job then it's much more better. Other than that jobs like Nutritionist or Dietitian are definitely good options but Microbiology will unleash new sides of career. Hope it works !!  Make a nice choice !!