What is an organ in the human body it skin socket ligament bicep?

None of the given options are organs in the human body. Here are the definitions of each term:

Skin: The skin is the outermost layer of the body and is composed of three main layers: the epidermis, dermis, and hypodermis. It protects the body from external factors, regulates body temperature, and provides a barrier to infection.

Socket: A socket is a depression or hollow in a bone that receives the rounded end of another bone to form a joint. For example, the hip joint is formed by the socket of the pelvis and the rounded head of the femur bone.

Ligament: A ligament is a tough band of connective tissue that connects bones to bones and provides stability to joints. For example, the anterior cruciate ligament (ACL) in the knee joint connects the shin bone (tibia) to the thigh bone (femur).

Bicep: The bicep is a muscle located in the upper arm. It is responsible for bending the elbow joint and is commonly referred to as the "biceps brachii" muscle.