A disadvantage of online surveys is that . a. it is difficult to access large numbers of potential respondents. b. they are so common that respondents may get tired of answering them carefully. c. the data is difficult to collect and organize. d. its is an expensive and time-consuming method of collecting data. e. it is impossible to target surveys toward specific demographic groups.

B seems like the best answer to me.

Explanation:

yes, but you must first make sure that you'll be able to make your turn or you can crash into other vehicles.

a  social news website  is an  internet  website  that features  user-posted stories. such stories are ranked based on popularity, as voted on by other users of the site or by website administrators. users typically comment online on the news posts and these comments may also be ranked in popularity. since their emergence with the birth of  web 2.0, social news sites have been used to link many types of information, including news, humor, support, and discussion. all such websites allow the users to submit content and each site differs in how the content is moderated. on the  slashdot  and  fark  websites,  administrators  decide which articles are selected for the front page. on  reddit  and  digg, the articles that get the most votes from the community of users will make it to the front page. many social news websites also feature an online comment system, where users discuss the issues raised in an article. some of these sites have also applied their voting system to the comments, so that the most popular comments are displayed first. some social news websites also have a  social networking  function, in that users can set up a user profile and follow other users' online activity on the website.