"Even if my tasks seemed unachievable, I typically buckle down and figure out the best approach to completing the tasks. I would start by organizing the tasks from most important to least, and then I would begin working on the most important task. If there were any tasks I could delegate to other capable individuals, I would not be afraid to ask for assistance."

It's important you back up your answers to interview questions like these with some evidence of how you organize tasks and prioritize throughout the day. Anyone can say they are great at managing multiple projects but, that statement has to be backed up with an example. If you're an experienced candidate, you should be able to think of numerous multi-tasking examples from recent jobs or examples from your current one. If you're straight of school and interviewing for an entry-level position, you might want to draw on examples from any internships you've held, or from the classes/assignments/major projects you juggled all at once during a particular semester.