Answer:
Explanation:
I believe the answer is B.
answer B: because if you want to have good information you want to have a educated person doing it, plus you don't want a someone who doesn't know what they're talking about writing it and you getting wrong info.
The practice which is not sound in conducting individuales is C) conducting in-person interviews and telephone interviews in the same poll.
In-person interviews deliver the most representative results. Telephone surveys provide a good alternative but they need using a larger sample.
