Why might a government entity choose to offer some information and services online as in e-government
a. prevent in person participation in government
b. to increase public interest in government
c. to decrease the number of paid staff
d. to
improve access to more of its citizens

My answer would be D, here is why: 

At the dawn of the information age, it became possible for American and other societies to be able to transfer information all over the world with just one click, this has increased laziness in our society dramatically. People these days are more likely not to go to a government office, then to just type a few characters. Going online helps government sectors to quickly spread the information they need to and make it "easier" for our citizens to file their paperwork.