Select the most appropriate option to complete the given sentence.
One must learn to ___________ a line between one's private and professional life.
Select the most appropriate ANTONYM of the underlined word:
Regardless of their diversity, all flowers have a uniform function, the reproduction of the species through the production of seed.
Select the most appropriate synonym of the underlined word in the following sentence:
Visiting a book fair always fills my heart with a great satisfaction.