<prompt> A hospital has always some beds vacant for emergency, isolation, emergency etc. These vacant beds are known as:Essential bed spaceMandatory bed spaceDead bed spaceNone of the above  <response>: A hospital has always some beds vacant for emergency, isolation, emergency etc. These vacant beds are known as dead bed space. This accounts for around 15 to 20. Ref: Textbook of community medicine, S. Lal, 3rd edition pg: 686. 