The correct option is C Household savings are sinking and they require to be revamped.
In the opening paragraph it is clearly mentioned that, 'This critical piece is 'savings' and, within this overall head, household savings is the one critical subcomponent that needs close watching and nurturing.' Therefore the main concern behind the alarm bells is option (c). Option (a) is a regular phenomenon. Option (b) is not the main concern as it is a temporary problem. Option (d) is not mentioned. Option (e) is ruled out.