Which bacteria grew in the widest range of temperatures?
a.) p. fluorescens
b.) b. gloibporus
c.) b. stearothermophilus
d.) e. oli

The correct option is : c.) B. stearothermophilus

Explanation:

Geobacillus stearothermophilus, earlier known as B. stearothermophilus or Bacillus stearothermophilus, is a Gram-positive bacteria. This bacterium is present in soil, ocean sediment, hot springs and it is also known to be responsible for food spoilage, as it can grow in a wide temperature range of 30 to 75°C. Therefore, it is called a thermophile.

A thermophile is an organism which can grow in high temperature conditions, typically between 41 and 122 °C.