One of the major goals of all interest groups is
to do which of the following?
(1) prevent voter fraud by ensuring that citizens
of voting age are registered
(2) elect a candidate who will represent the
views of every citizen
(3) persuade public opinion to be in agreement
with their respective views
(4) supervise congress in order to prevent any
wrongdoing

C) persuade public opinion to be in agreement with their

respective views

Explanation:

The concept of “interests group” was introduced into the scientific circulation by the American scientist Arthur Bentley (1908). By this term, he understood a variety of organized groups of people with specific goals and specific requirements for political power.

Interest groups are trying to influence the government, to adjust the political decisions made in their interests. Moreover, interest groups do not seek to gain power - this is their key difference from party groups. However, this does not mean that interest groups do not delegate their representatives to state authorities and do not contribute to the development of their political career. However, this is done for the sake of more effective political influence and the realization of their interests.

i believe the answer is:

-   william jennings bryan is a democrat while mckinley was a republican

at that time, the segment of population that choose for democratic party were the voters with low economic background and vice versa

- william jennings has support of populists and wants to have inflation to farmers while mckinley has support of bankers and businessmen , doesn't want inflation

the fixed value of gold make the large business able to stack up their gold without   being worried that it would devaluated.

- william jennings supported the silver standard while mckinley supported the gold standard

according to jenning, using other metal beside gold could the poor people to have more purchasing power and them advance in the society.