Which of the following is not a good general purpose for a blog?

a. Sharing news from the racing circuit, describing how the racers we sponsor are faring and how they use our products.

b. Commenting on economic and social policy decisions that affect the national and international business environment.

c. Explaining to the local community why we’ve decided not to expand employment at the Nampa facility.

d. Describing the work going on in our research and development labs.