Final answer:
The coaching style most difficult to implement in terms of individualized coaching is likely the command style, due to its directive nature and top-down communication flow. A democratic style could be more appropriate for fostering participation and shared decision-making, while a laissez-faire approach suits self-motivated learners.
Step-by-step explanation:
The coaching style that is most difficult to implement in terms of individualized coaching is subjective and can depend on various factors, such as the context and the individuals involved. However, considering the options provided, a command style of coaching can be particularly challenging.
Considering the context provided in the reference information, authoritarian leadership, which closely aligns with a command approach, has a communication pattern flowing from the top down. This style requires the leader to have significant control and does not reside primarily in traditional forms of authority.