leaders allow members of their team more freedom in their work, permit team members to use their own judgment in solving problems, and grant members authority. Conversely, leaders typically act as the spokesperson of their group, push for more work and higher production, and determine what should be done and how it should be accomplished.
a. Person-focused; task-oriented
b. Participatory; contingent
c. Transactional; transformational
d. Extrinsically-motivated; intrinsically-motivated

Person-focused leaders, are, precisely, people-oriented. They care more about the well-being of their employees than about specific outcomes. It's not like they do not care about results, it's that they believe that the well-being of employees is fundamental the success of the firm.

Task-oriented leaders, as the name implies, are more worried about tasks, and results, and they believe that employees should adapt themselves to what the tasks demand, instead of the other way round. They are not so worried about catering to each employee specific abilities, they need their employees to use their abilities in a way that is consistent with the strategy that has been laid out to achieve the disired result.