Which diagram best explains a cause-and-effect relationship that has shaped U. S. politics?
has
contributed
to
Ο Α.
Americans' lack of
party loyalty
The exstence of
many influential
political parties
has
contributed
to
ОВ.
The advantage of
being an
Independent in
Congress
The persistence of
the two-party
system
have
contributed
to
O C.
Restrictions on
who can receive
public campaign
funds
The persistence of
the two-party
system
have
contributed
to
O D.
Winner-takes-all
elections
The exdstence of
many influential
political parties

The answer is C. Restrictions on who can receive public campaign funds The persistence of the two-party system have contributed