Does anyone wanna talk?

What can be inferred by the description of this setting

In  the diary of anne frank, the characters feel sadness after reading the hopeful message written on the cake. which theme does this best illustrate? peace is often most appreciated after it has been lost.wartime is capable of bringing out the worst in people.  it is important to have someone in whom to confide.sharing difficult experiences can strengthen friendships

Which sentence is the most effective in stating the overall purpose of section 4, “confidentiality of user names and passwords? ”