Answer:
D. A random sample
Explanation:
The answer to your question is A. A convenience sample because this sampling type is people being chosen from the population of her school. We can also rule out the other options because of the following reasoning:
[✓] A. A convenience sample
-> This is the correct option. She is asking students at her school that are nearby.
[✗] B. A self-selected sample
-> This type is more like a poll, people volunteer for a self-selected sample, while here they are being asked
[✗] C. A systematic sample
-> Every so often she is asking students questions, she does not have a set number of how often or of the population (that we know of)
[✗] D. A random sample
-> This option could be correct, but since the students being chosen are nearby we can decide the best option is option a.
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)
- Heather