In a for loop, what is typically iterated over?

• A. Lines of code
• B. Data types
• C. Sequences such as lists or strings
• D. Conditional statements

Answer: (C)

In a for loop, the typical purpose is to iterate over a sequence, which includes data structures such as lists, tuples, strings, and dictionaries. This allows the loop to execute a block of code multiple times—once for each item in the sequence.

For example, if you have a list of numbers, a for loop can go through each number one by one, allowing operations to be performed on each element individually. When a string is used, the loop can iterate over each character within the string. This capability means that for loops are versatile and essential for processing collections of data efficiently.

The other options do not accurately represent what a for loop iterates over. While lines of code are executed within the loop, they are not what the loop iterates over. Data types themselves are not iterated; rather, specific instances of data structures that contain elements. Conditional statements control the flow of code but don't form a sequence to iterate through. Therefore, the correct answer highlights the primary use of for loops—working with sequences.