Correct option is A
Option (a) is the correct meaning of the given idiom.
Idiom:
A dime a dozen means something very common and available in large quantity, and hence of little or no unique value. (बहुत आम, कोई खास महत्व नहीं)
Example in a sentence: Fake designer bags are a dime a dozen in local markets.
At least 3 related idioms:
·
Ten a penny – very common and of little worth.
·
Run of the mill – ordinary or not special.
·
Nothing to write home about – not particularly impressive.
This idiom often conveys a dismissive tone toward something considered unremarkable.