Question

most of the skeleton of a human embryo is composed of connective tissue known as
ligaments

tendons

bone

cartilage

Explanation:

In human embryonic development, the skeleton initially is mostly made of cartilage, which later gets replaced by bone during growth. Ligaments connect bones, tendons connect muscles to bones, and bone is the later - stage skeletal component. So the connective tissue that makes up most of a human embryo's skeleton is cartilage.

Answer:

cartilage