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.
Answer:
this is hurting my brain more then half the questions on this app
<span>Vladimir Lenin is the founder of Russian Communist Party. In the year 2012, people demolished the statue of this leader because they considered it to be a symbol of Russian imperialism. The statues had suffered damages during protests and now need vital repairs. Lenin's support of democratic ideas was not welcomed by communist parties. Lenin's communist ideals were no longer supported by the people, and this was backed United Russian Party.</span>
Charlemagne was crowned emperor of the west in 800 CE.