Which sentence below is properly punctuated?
a.
i am typing a letter, and she is talking on the phone.
b.
she finished her work and, then took a long lunch.
c.
mae said "why don't you come up and see me sometime? "

The question below refers to the selection “ozymandias” by percy bysshe shelley. the traveler seems to believe that — a. monuments are eternal b. the passage of time is necessary and inevitable c. we must preserve relics of past civilizations d. even the greatest works are destroyed by time