A reflexive pronoun is a pronoun that ends in -self or -selves. Look at sentence #4: The kids really enjoyed THEMSELVES. The capitalized word ends in -selves.
Answer: The kids really enjoyed themselves.
"Sea ice melt itself does not cause sea levels to rise because the ice is already in the water. But the melting of ice on a land surface, like Greenland, does because new water is flowing into the ocean. In addition, as ocean water warms, it expands, which also raises sea level."
Hope this helps!!
An absurd pretense intended to create a pleasant or respectable appearance
