Answer:
a: euphenism
Step-by-step explanation:
Press secretaries must have a very good knowledge of how to use the appropriate words. In this occasion, in order to find a way to avoid embarassment resulting from a lie, he tries to minimize what he had declared before, so he employs an euphenism, by using and comparing the expressions "operatrive statement" and "inoperative" instead of acknowledging: "I was wrong when said that."