They came over on an <span>umbilical cord.</span>
Under development of the brain.
The answer is (A. A warm current flows along the coast.) Currents carry cold and warm water from place to place. It's an amazing phenomenon that scientists are still trying to fully figure out. Some think it's caused by wind, others think it's caused by the shifting of the tectonic plates, but one thing's for sure, currents are VITAL for this planets life.
Environmental functions is the correct option. Hope it helped U. If it helped you please mark as brainliest