Final answer:
The first behavior for design thinking sensibility in approaching wicked problems is (a) inquiry, which includes critical questioning and exploration to understand and solve the problem effectively.
Step-by-step explanation:
The first behavior for design thinking sensibility in approaching wicked problems is to engage in inquiry. This involves posing critical questions and exploring the problem in depth. Asking questions such as 'What problem am I interested in learning about?', 'Why should the problem be solved?', and 'What are some realistic solutions to the problem?' are essential in the design thinking process.
These questions facilitate a better understanding of the issues at hand and create a foundation for possible innovative solutions. Engaging in inquiry is crucial to ensure that the problem is well-defined and that the solutions developed are effective and comprehensive.