Which type of structure is used to determine which of two sets of instructions to execute?

________ is the branch of computer science that attempts to create computers that think like humans

A) Artificial intelligence B) Enterprise resource planning C) Expert systems D) Natural language processing

The following 4 lines of C++ code, use strings.

``` string firstName; // Define a string object char lastName[7]; // Define a C-string firstName = "Abraham"; // Assign a value to the string object lastName = "Lincoln"; // Assign a value to the C-string ```