Final answer:
The preferred size for a Development Team in Scrum is 5-9 members, providing a balance that promotes efficient communication and collaboration.
Step-by-step explanation:
The recommended size for a Development Team within the Scrum Team is option B) 5-9 members. Scrum methodology emphasizes the importance of a small, cross-functional team where members can collaboratively work on tasks and challenges. Having too few members might limit team capabilities, while too many members can lead to communication challenges and coordination difficulties. The ideal team size of 5-9 members is designed to optimize team dynamics, efficiency, and overall effectiveness in the Agile development process.