Correct : c

The correct answer is Option C — ello World!
The C program uses strchr to locate the first occurrence of a character in the string "Hello World!", then advances the pointer by 1 position past that character. The resulting pointer now points to the substring starting one character after ''H'' — which is "ello World!".
When this pointer is passed to printf or puts, it prints from that position to the end of the string, giving the output ello World! — note the capital ''H'' is skipped.
This is a classic pointer arithmetic question in C. strchr returns a pointer into the original string, and adding 1 to it simply moves one character forward without creating a new string.