Final answer:
To start working with a cosmetology license, one must complete all required 1200 hours of training.
Step-by-step explanation:
The question pertains to the requirements for starting to work with a cosmetology license. In order to start working with a cosmetology license, one must complete the specified number of training hours required by the licensing authority. According to the question, which states that 1200 hours of training are required for a cosmetology license, the correct answer is a) 1200 hours. One must complete all 1200 hours of training to be eligible to start working with a cosmetology license.