Question

what is an iteration or a sequence and example of?
A. variable
B. control structure
C.syntax
D. tool

Answer 1

An iteration or a sequence is best described by **B. control structure**.

### Explanation:
- **Iteration** generally refers to the process of repeating a sequence of instructions a certain number of times or until a specific condition is met, which ties closely to control structures. Control structures in programming (like loops) dictate how code execution flows, including how iterations are performed.

### Examples of Control Structures Related to Iteration:
1. **For Loop**: Repeats a block of code a specific number of times.
```python
for i in range(5):
print(i)
```

2. **While Loop**: Continues executing a block of code as long as a specified condition remains true.
```python
count = 0
while count < 5:
print(count)
count += 1
```

In both examples, the control structures facilitate the iteration process.