Final answer:
A solar sail craft can indeed be propelled by particles within the solar wind, making the statement true.
Step-by-step explanation:
The question concerns the concept of solar sail propulsion. A solar sail is a method of spacecraft propulsion using a combination of light pressure from a star, such as our Sun, and the solar wind. The light exerts pressure on the sail due to the momentum of photons, and this pressure can be used to propel a spacecraft. However, the solar wind, which consists of charged particles ejected from the Sun's upper atmosphere, also contributes to the thrust on a solar sail craft. Therefore, the statement is true: it is possible to propel a solar sail craft using just particles within the solar wind.