Of the answers you offer us here, the best is A. This was the basis of all of the major complaints about the Equal Rights Amendment. Some people would argue that both B and C are true, but those issues were less important during the debate over the ERA. D is meant to confuse you because some people argued against the ERA on the basis that it would cause women to be drafted.
The major problem that conservatives had with the ERA was that it would destroy the traditional American way of life. They thought it would do this by forcing women to be just like men in all ways.