Fill in the blanks with the most appropriate words. _______ earth moves round ______ sun.
(a) An/the
(b) The/no article
(c) The/the
(d) no article/the
‘The’ is used as a definite article for a thing or person when the reader knows which one we are exactly referring to. ‘The’ refers to a particular subject and shows the uniqueness of the subjects. Earth and Sun are celestial bodies and are unique in nature.
The earth moves round the sun.
Hence option c is the answer.