Answer:
a. are often transmitted by fecal contaminated water and food.
Explanation:
Eschericia coli belongs to a group of bacteria generally referred to as fecal coliforms because they are of fecal origin.
Hence, their common mode of transmission is through fecal to oral routes such as fecal contaminated food, water and any other substance that passes through the mouth.
E. coli infections can be treated using suitable antibiotics.
The correct option is a.
