Why are business interests more influential in Texas politics than they are in national politics?

a) It is more advantageous to tackle business issues at the state level rather than at the national level.
b) Texas business interests have not yet achieved their goal of promoting public policies conducive to business growth.
c) Texas business interests have a history of corrupting public officials through bribes and campaign endorsements.
d) Groups that often oppose business interests on various policy issues are relatively weak in Texas.
e) There is a limit to how many business interest groups that can operate nationally.

D