A. referendum
B. individual speech
C. individual writing
D. opinion sampling
Correct Answer: Option D
D. opinion sampling
Explanation
An opinion poll/sampling, often simply referred to as a poll or a survey is a human research survey of public opinion from a particular sample.
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![Calculate the energy required to vapourize 50g of water initially at 80°C.[specific heat capacity of water = 2260Jg‾¹K‾¹] [specific latent heat of vaporization of water = 2260Jg‾¹]](https://erudites.ng/wp-content/plugins/contextual-related-posts/default.png "Calculate the energy required to vapourize 50g of water initially at 80°C.[specific heat capacity of water = 2260Jg‾¹K‾¹] [specific latent heat of vaporization of water = 2260Jg‾¹]")
