Find the underlined part that needs correction in each of the following questions

Find the underlined part that needs correction in each of the following questions.
14. It is too hot today - please turn on the air condition.

         A   B                                       C                   D

15. Governments worldwide are working together to protect the environment for pollution.

                                    A               B                              C                                    D

16. My uncle is one of the best environmentalist in my country.

       A                                B                 C              D
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