The phrase "Dime a dozen" is an idiom in English. It means that something is very common and can be easily found, typically implying that the item or thing is of low value or easily replaceable. The expression originates from the early 1800s, when certain items, such as eggs or apples, could be bought cheaply, specifically at a rate of a dozen for a dime.
Based on the options provided, the correct interpretation of the phrase "Dime a dozen" is: Anything that is common and easy to get.