Before committing yourself to helping another person—even someone in obvious distress—make sure your support is welcome.
In the given statement, the blank is to be filled with an appropriate word out of the given options.
Helping others in their time of distress is appreciated but unnecessary support should not be provided. One should help the other person only if he/she thinks that his help is required and the efforts would not go in waste.
Therefore, Before committing yourself to helping another person—even someone in obvious distress—make sure your support is welcome.
Hence, the correct answer is (C) welcome.
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