Explanation:

Both statements are incorrect.

• The BASIC countries primarily focus on climate change negotiations and advocating for the interests of developing nations in global climate agreements. Their purpose is not to counter military alliances but to ensure equitable climate action and financial support from developed nations. 

• None of the BASIC countries (Brazil, South Africa, India, and China) are members of the OECD. Instead, they are considered Key Partners of the OECD, meaning they collaborate with the organization but are not full members. 

Hence option 4th is correct.