On which day was Maharashtra formed after separation from Bombay State?

Answer: Option A

On 1^st May 1960, Maharashtra formed after separation from Bombay State. The Bombay Reorganisation Act of 1960, which resulted in the two separate states of Maharashtra and Gujarat, was enacted by the Parliament of India on 25^th April 1960, and thus, on 1^st May 1960, Maharashtra attained its statehood.