An example of a bacteria requiring low concentration of oxygen is?

Explanation

Option A: Spirochetes are a diverse group of bacteria that exhibit a helical or spiral shape. While some spirochetes are microaerophilic, many others can tolerate a wide range of oxygen levels.Option B: Escherichia coli (E. coli) is a facultative anaerobic bacterium, meaning it can survive and grow in both the presence and absence of oxygen.Option C: Pseudomonas is a genus of bacteria known for their ability to adapt to a variety of environmental conditions, including aerobic and anaerobic environments. While some species within the genus Pseudomonas are adapted to low-oxygen conditions, many others are capable of aerobic respiration. Option D: Campylobacter is an example of a bacteria that requires a low concentration of oxygen. It is considered a microaerophilic bacterium, meaning it thrives in environments with reduced levels of oxygen. Campylobacter species are commonly found in the gastrointestinal tracts of animals, including birds and mammals, and can cause infections in humans.