Answer:
A cheap umbrella standing in a glass case
Step-by-step explanation:
The piece of art that is most similar to Marcel Duchamp’s ready-made pieces is a cheap umbrella standing in a glass case.
As a pioneer of Dada, Marcel Duchamp questioned the traditional way of elaborate art. After World War 1, there used to be many previous conceptions of what art should be and Duchamp questioned all of them with its proposals. What Marcel Duchamp did was to collect everyday objects and presented them as art. One of Ducmap’s famous quotes was “An ordinary object could be elevated to the dignity of artwork by the mere choice of the artist.” So, regarding the question, the piece of art that is most similar to Marcel Duchamp’s ready-made pieces is a cheap umbrella standing in a glass case.