Thus making ineffective the opposition’s argument
Answer:
B
Explanation:
regarding the "yet" at the end of the sentence, meaning it is still in the process and it is indicating a present perfect continuous tense therefore "been" is part of the rule.
He sold 4 large paintings so made 129 and sold two small paintings so made 39.8. together 129+39.8 = 168.80 so he made 168.80 in total