Hence option C is the correct answer. Option A is incorrect because “desire” means a strong feeling to want something, which is not the same as having an interest towards something, hence it is incorrect .
Option B is incorrect because “bias” means inclination or prejudice for or against one person or group, usually considered unfair. Hence it is incorrect.
Option D is incorrect because “training” means the process of being taught and trained to perform an activity, hence it is incorrect.