E. coli and example of entrobacteriace is important for causing diarrheal diseases its size is____________?

Explanation

E. coli is a short rod approximately 1.1-1.5 μm wide and 2.0-6.0 μm long, so option c gives the appropriate bacterial dimensions with units. Students may choose 100-200 nm because bacteria are microscopic, but nanometres describe much smaller structures such as ribosomes, not the whole E. coli cell.