Final answer:
Yes, it is possible to propel a solar sail craft using just particles within the solar wind, which transfer momentum to the craft's sail.
Step-by-step explanation:
The student has asked whether it is possible to propel a solar sail craft using just particles within the solar wind. The answer to this question is true. A solar sail craft, also known as a solar sailer, is propelled forward by the pressure of light from the Sun and the solar wind. This propulsion technique does not require any fuel as it relies on the momentum of photons and the solar wind particles. When these particles hit the reflective surface of the sail, they transfer their momentum to the sail, pushing it forward.