Answer:
c. degree of preference for different reinforcers
Explanation:
The answer is --
c. degree of preference for different reinforcers
The term "Bias in matching" means it is more likely to see cases as applicable and logical in logical reasoning work when the lexical content of the case equals to the propositional rule.
If different alternatives leads to a different reinfocers, then the reinfocer which is bias to one represents reiforcer preference.
Thus the answer is
c. degree of preference for different reinforcers