C. Because it is the only one that actually gives the correct positive effect
Classical Conditioning was used by Ivan Pavlov to show how a signal can stimulate a response such as a bell. Here the dog associates the sound of a bell to food.
Operant Conditioning, on the other hand, was used by B.F Skinner. It associated reinforcement and punishment with a certain desired behavior. For example, a dog eagerly gets the ball because it gets something in return. Punishment can be a ground for not having something that a person wants, so the person avoids breaking the rules.
Answer:
gas and vitamin K
Explanation:
The term gut microbiota refers to microorganisms such as, for example, bacteria, fungi, etc., that live in the gastrointestinal (GI) tract of humans. In the intestine, there are lactic acid bacteria that are known to synthesize vitamin K2 (also known as menaquinone). Moreover, there are GI bacteria that play roles in the metabolism of bile acids and sterols. Finally, intestinal bacteria from a group named Proteobacteria produce gas, this group is especially in the guts of colicky babies, where cause pain and lead to crying.
