Correct Answer: (Knife, Needle, Plumb line)

Solution : Let's check the options –
First option: (Knife, Needle, Plumb line); This group of words refers to the objects used for work.
Second option: (Surgeon, Warrior, Chef); The group of words refers to the profession.
Third option: (Farmer, Mason, Doctor); The group of words refers to the profession.
Fourth option: (Labourer, Tailor, Sculptor); The group of words refers to the profession.

Therefore, the first option is different from the others. Hence, the first option is correct.