Question 2 (a) Discover a suitable word from the box below to complete the following sentences pre-processor action optional comments zero mandatory header syntax nesting decision sequential looping 1. Programmers insert to document programs and improve program readability 2 Lines beginning with a # are processed at time 3. Normally, statements in a program are executed one after the other in the order in which they are written. This is called execution 4 The diamond flowcharting symbol is also called the symbol 5. The rectangle flowchart symbol is also called the symbol. 6. Indentation in the if selection statement is always 7. Having a loop within a loop is known as 8. Placing a semicolon after the right parenthesis enclosing the parameter list of a function definition is a error : 9. Each standard library has a corresponding file 10. The first element in every array is the element