The ____ option exists as a simple solution to help you maintain a consistent light source for multiple layer styles.

Answer the following statements true (T) or false (F)

1) Any variables declared in a for statement header have block scope within that statement. 2) Methods of a class can access all members defined in that class. 3) A local variable or reference declared in a block can be used in blocks in which that block is nested. 4) Since memory in a computer is finite, a stack error may occur known as stack overflow.

________ involves reworking programs to make them clearer and easier to maintain while preserving their correctness and functionality.

a. Object-oriented programming b. Refactoring c. Agile software development d. LAMP