B i think!! hope this helped
<span>Social interactions may help lower the risk of Alzheimer's disease by the brain constantly working behind the scenes. When a person is socially interacting, they are using their mind even if they don't notice. Someone in the beginning stages of Alzheimer's will not remember a lot of details about their lives. However, socially interacting may be able to bring back memories that will trigger the brain to remember the details they had forgotten. So B is the correct answer.</span>
A. Mouthwash contains ingredients that kill harmful bacteria. Tell me if it's right
Answer:
An extensive tract of level or rolling land, destitute of trees, covered with coarse grass, and usually characterised by a deep, fertile soil. They abound throughout the Mississippi valley, between the Alleghanies and the rocky mountains. From the forests and the prairies, From the great lakes of the northland.
Explanation:
The bones that make up the joint allow movement, but it is the muscles that pull the bones that produce the movement. Muscles are attached to bones by structures called tendons. Tendons must be both strong to facilitate movement and compliant to prevent damage to the muscle tissues. Ligaments, which are stiff structures that connect bones, help to prevent excessive movement. Muscles, tendons, and ligaments are attached around each joint at very specific positions, with joint surfaces shaped in exact dimensions. Fluid within most of the joints lubricates the joint surfaces to reduce friction and allow for lifelong use.