Final answer:
The challenging aspects faced by leaders in the group decision-making process include communication barriers, resistance from influential members, and individual biases.
Step-by-step explanation:
In the group decision-making process, leaders often face several challenging aspects. One challenging aspect is communication barriers which can lead to misunderstandings and conflicts within the team. Another challenging aspect is resistance from influential team members, which can cause delays in the decision-making process. Lastly, individual biases can affect the evaluation of alternative solutions and hinder consensus-building.