We can actually deduce here that the following statements that describe a central idea of Friedan's "The Problem That Has No Name" are:
Determining the meaning of real femininity
Women feeling unfulfilled in typical domestic roles.
<h3>What is central idea?</h3>
Centralidea refers to the main and important idea or lesson that a writer is seeking to pass across to the readers. It refers to the theme that is embedded in a passage.
We see that in Friedan's "The Problem That Has No Name", the statement above describe the central idea in the passage.