Since Jessica's participation in local politics increased significantly after she joined her school's political scienceclub, it is clear that her involvement in that club led her to take an interest in politics. The argument above is flawed because:

a. it doesn't say which political issues Jessica is interested in.

b. it states that the only purpose of the political science club is to spark an interest in politics.

c. it misuses the word "significantly.

d. it's possible that an interest in politics caused Jessica to join the political science club

The correct answer is letter D

Explanation: In this case as Jessica joined the club this generated a great interest in politics, joining the club made her more likely to see politics in a more interesting way.

Answer: D. It's possible that an interest in politics caused Jessica to join the political science club

Explanation: The text above states that since Jessica joined the school political science club, her activity in local politics has increased significantly. Such a claim cannot make a clear conclusion as to what preceded what, that is, what caused the other. There is a clear link between the two actions, but it can also be concluded that Jessica's interest in politics was the reason for her joining the school's political science club. The fact that her involvement in local politics has increased significantly does not mean that this is due to her joining the school club. Perhaps her involvement in local politics has increased after her interest in politics, which is why she joined a school club to increase her knowledge about politics and consequently involvement in local politics.