B. The mean of its sampling distribution is equal to the true value of the parameter being estimated
The correct option is D.
When one is about to start using a particular social media, it is needful that one first creates a trial for some important reasons. Firstly, creating a trial gives one the opportunity to become familiar with the program, so that one will know what using the media entails. Creating a trial also gives one the opportunity to decide whether the social media is fit for one's needs or not. During this period, one will surely make some mistakes, but their impacts will be minimized because one is just trying out the social media.
B. When the subject matter is objective and informative
GDP is designed to assess the production of goods in a market economy by output. However, it is not efficient in accounting for public and private services that without output that are easily countable by the number of units produced. GDP is not also well suited in measuring improvements in the diversity and quality of goods and
services. It is also poor in estimating the depletion of resources. Finally, it doesn't also reflect the degradation
of the environment involved in the production process.
