Which type of connective tissue makes up the largest percentage of the human embryo?

The type of connective tissue that makes up the largest percentage of the human embryo is mesenchyme. Mesenchyme is a loose connective tissue that gives rise to various tissues and organs during development, including bone, cartilage, and blood. It is characterized by a rich supply of mesenchymal stem cells, which can differentiate into multiple cell types. This versatility is crucial for embryonic development and tissue formation.