Answer:
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.
