To solve this question, the user needs to have knowledge of the English Premier League (EPL) and its history. The user must also know the teams that have won the EPL title multiple times.

Now, let's go through each option and explain why it is right or wrong:

A. Arsenal: This option is incorrect because Arsenal has won the EPL title three times (1997-98, 2001-02, and 2003-04), which is not the highest number of titles won by a team.

B. Newcastle United: This option is incorrect because Newcastle United has never won the EPL title. Therefore, they cannot hold the record for the most EPL titles won.

C. Liverpool: This option is correct. Liverpool has won the EPL title 18 times, which was the highest number of titles won by a team before Manchester United equaled the record by winning their 18th title in the 2008-09 season.

D. Chelsea: This option is incorrect because Chelsea has won the EPL title five times, which is not the highest number of titles won by a team.

The Answer is: C. Liverpool