What role do interest groups play in educating policy makers about political issues

What role do interest groups play in educating policy makers about political issues? a. They serve to overwhelm policy makers with too much information. b. They are an important source of political information. O c. Interest groups are never considered a valid source of information because they are so biased. O d. They tend to confuse policy makers and often alienate them. O e. So few people are members of interest groups that any communication policy makers receive from such groups is considered insignificant.