Final answer:
The correct answer is c. function. Functions are sets of statements in a program designed to perform a specific task. They improve code modularity and can be defined and invoked in various programming languages.
Step-by-step explanation:
The correct answer to the question 'a group of statements that exist within a program for the purpose of performing a specific task is a(n)' is c. function. A function in programming is a set of statements that perform a particular task and can be invoked as needed within a program. This allows for code to be organized and reused, improving the program's modularity and readability.
Different programming languages have different ways of defining and calling functions, but the core concept remains consistent. For example, in Python, a function might be defined using the def keyword followed by the function name and parentheses containing any parameters the function may require. The statements that make up the function's body are then indented below this line. Here's a simple Python function that adds two numbers:
def add(num1, num2):
return num1 + num2
result = add(3, 5)
print(result) # Outputs 8
A block (option a) generally refers to a section of code that is grouped together, such as the body of a function, loop, or conditional statement. A parameter (option b) is a variable used to accept input within a function. An expression (option d) is a combination of values, variables, and operators that can be evaluated to produce another value.