The work done by static friction can be: 1) positive. 2) negative. 3) zero. 4) nonnegative. 5) Any of the above.

To determine the work done by static friction, let's analyze the conditions under which static friction operates: 1. **Positive Work**: This occurs when the force of static friction acts in the same direction as the displacement of the object. However, static friction typically prevents motion, so this scenario is rare. 2. **Negative Work**: This occurs when the force of static friction acts in the opposite direction to the displacement. This can happen if the object is trying to move in a direction that static friction is opposing. 3. **Zero Work**: This occurs when there is no displacement of the object. If the object does not move, then the work done by static friction is zero, regardless of the force applied. 4. **Nonnegative Work**: This implies that the work done can be either zero or positive. Since static friction can do zero work when there is no displacement, it can also be considered nonnegative. 5. **Any of the Above**: Since static friction can do positive work (in rare cases), negative work (if it opposes motion), zero work (if there is no displacement), and can be considered nonnegative, this option is also valid. Based on this analysis, the correct answer is: **5) Any of the above.**