Common nouns name general things, whereas proper nouns name
specific individuals or things. For example, 'man' is a common noun whereas Thomas
is a proper noun, a specific name for a particular man. Proper nouns always begin with a capital letter.
Option
C: 'Spectacles' is a common noun as it names a thing (worn on the
eyes). 'Marie' is a proper noun because it names a particular
individual.
Also, proper nouns begin
with capital letters whereas common nouns begin with
small letters. (In any sentence or a phrase in a new
line, the first letter of the first word is a capital.) In the sentence,
'spectacles' begins with the small letter 's' and 'Marie' begins with
the capital letter 'M'.
Hence this option is the right
one.
Option A: 'Marie' is not a general name and hence it isn't a common noun.
Option B: The noun 'spectacles' is a common noun whereas 'Marie' is a proper noun.
Option D: 'Spectacles' cannot be a proper noun because it names a general thing.
Hence options A, B and D are incorrect.