Question: Why was the US not able to provide an adequate response to the Korean invasion?

Is As an initial response, Truman called for a naval blockade of North Korea, and was shocked to learn that such a blockade could be imposed only 'on paper', since the U.S. Navy no longer had the warships with which to carry out his request. a good answer to this question?

Available choices: 1). yes. 2). no.
2).