Question

which tissue type is formed by many cells joining together, which are multinucleated?
cardiac muscle
dense regular
smooth muscle
skeletal muscle

Explanation:

Skeletal muscle tissue is formed by the fusion of many myoblasts (muscle - forming cells) during development. This fusion results in multinucleated muscle fibers. Cardiac muscle cells are typically mononucleated (with one nucleus) and are connected by intercalated discs. Smooth muscle cells are also mononucleated. Dense regular connective tissue is not a muscle tissue type and is made up of fibroblasts and collagen fibers, not multinucleated cells formed by cell fusion.

Answer:

skeletal muscle