(25) A decision is made by the zoo staff that a certain cat is in too much pain to have a good life, when the life of that cat is humanely ended.
Read the passage. Look at the underlined section marked number (25). There may be a mistake in the way the sentence is written. If you find a mistake, choose the answer that corrects the mistake. If there is no mistake, choose ‘Correct as is.’

A) Correct as is.
B) When a decision is made by the zoo staff that a certain cat is in too much pain to have a good life, the life of that cat is humanely ended.
C) A decision is made by the zoo staff that a certain cat is in too much pain to have a good life, unless the life of that cat is humanely ended.
D) When a decision is made by the zoo staff that a certain cat is in too much pain to have a good life, so the life of that cat is humanely ended.