24. Function searches for the first occurrence in its first string argument of any character in...

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24. Function searches for the first occurrence in its first string argument of any character in its second string argument. a

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strfirst is not a valid c function.
strstr finds the first occurrence of second string in the first string.
firstany is not a valid c function.
strpbrk finds the first occurrence of a character from the second string in the first string.

Answer: d.  strpbrk

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