None of the given options is correct. If we observe carefully the first line is like structaddr {. There is no space between struct and addr. So it will give following error:
main.c: In function 'main':
main.c:12:5: error: 'structaddr' undeclared (first use in this function)
structaddr {
^
Had there been space between struct and addr, one of the given options would have been correct. But since in question paper, there is no space between struct and addr in first line. So the given code will give error and hence none of the options is matching (or you can say all options are matching because with all options, same error will be there). So in ISRO marks should be given to all or this question should be removed from final evaluation.