The nervous system is the most important body system and the heart is the most important muscle
The answer is "The speaker's beloved is more beautiful than a summer day."
It is referred as <span>zone of proximal development. The zone of proximal development enables a person to distinguish what he or she is capable of with help towards others and without it. It is somehow related to the given sentence above where it shows how children can do on their own and with the help of another person.</span>
