In the accompanying figure, the unnumbered anchor point is a(n) corner point.

__________ facilitate high-speed searching and sorting of data, efficient elimination of duplicate items and compiling expressions into machine language.

a) Linked lists b) Queues c) Stacks d) Binary Trees

What does the following code segment do?

``` for (int i = 1; i <= 5; ++i) { for (int j = 1; j <= 3; ++j) { for (int k = 1; k <= 4; ++k) { Console.Write('*'); } Console.WriteLine(); } Console.WriteLine(); } ```