Once an election has moved past the primary stage, a political party’s role changes. All of the following are roles of political parties during general elections EXCEPT:
A.
shifting goals to defeat the other party
B.
creating advertisements and political materials
C.
organizing national conventions and campaign events
D.
using the endorsements of influential elected party members

C.  Organizing national conventions and campaign events.

Explanation:

The primary elections are held to choose which representative of each political party will participate in the general elections. During the primary elections, each candidate holds national conventions and campaign events during which the political candidate expresses his campaign objectives and plans.

This is why after the primary elections there are no political conventions or campaign events; the candidate that each political party will represent has already been chosen, so the campaign work is focused on defeating the representative of the other political parties.

I hope this information can help you.

offline recommendation systems option b

because recommendation systems produce a list of two ways

1. through collaborative filtering

or

2. through content-based filtering

russia because it is the biggest state