Final answer:
Tasha is using the problem-solving method of breaking her long-term goal into smaller steps to approach her portfolio project.
Step-by-step explanation:
The problem-solving method that Tasha is using to approach her long-term goal of finishing her portfolio project is breaking it into smaller, more manageable steps. This method involves dividing a large goal into a series of smaller tasks or action steps, which makes the overall goal less overwhelming. By setting target dates for each step and monitoring progress, Tasha can effectively work towards completing her portfolio project.