Which trade, related to personal grooming, is covered in Entrance Exam 1?

The trade related to personal grooming that is covered in Entrance Exam 1 is hairstylist. This profession involves various hair care services, including cutting, coloring, and styling hair, as well as offering treatments for scalp and hair issues. It is specifically recognized for its focus on enhancing an individual's appearance and is part of the broader beauty and personal care industry.

In understanding the other trades listed in the question, construction craft labourers engage in manual labor primarily on construction sites, electricians specialize in electrical systems and installations, and heavy-duty mechanics focus on repairing and maintaining large equipment and machinery. While these are critical skilled trades, they do not pertain to personal grooming, which clarifies why hairstylist is the correct and relevant choice in this context.