Question

Lactobacilli and humans: Lactobacilli are a type of bacteria that live in our lungs and destroy many of the harmful microorganisms that enter our respiratory system. They are highly adapted to living in our lungs and can’t survive in many other habitats.

A- COMMENSAKISM
B- PARASTTM
C_ MUTUAL ISM

Answer 1

It is mutualism because the human and the Lactobacilli need each other for their health. Mutualism is when two species benefit. That is what is happening in this scenario.