The underlined word "insufficient" in Paragraph 6 probably means（）

A．Kuchansky and her partner had their tickets missing in the tsunami.
B．All the parents mentioned are worried about their children's safety.
C．Most embassy staff were too busy in their work to answer mobile phone calls.
D．The parents of the young Israelis don't have enough time to contact their kids.

A．called their friends to tell them what had happened
B．had great fun even if they knew the tsunami had come
C．knew nothing about the tsunami until their friends rang them up
D．turned out calm in face of the tsunami