Which of the following bacteria gre best at the lowest osmotic pressure?
a.) s. ruber
b.) e. coli
c.) s. aureus
d.) v. costicola

b) E.coli

Explanation: E. coli (Escherichia coli)  is the bacteria found mostly in the intestines of people who are healthy or animals. Mostly the different types E. coli do not harm the human body generally.

E.coli can have a growth in well defined osmotic pressure.Other given option S.rubber and V. costicola require high osmotic pressure for the growth and S.aureus also cannot grow in the osmotic pressure environment.