a$)$ Which soil $($#$1$ through #$13)$ is likely the most expansive $($swells when wet$)$ and why?

b$)$ Which soil $($#$1$ through #$13)$ would you prefer to build your house on and why?

c$)$ If a hydrometer analysis was conducted on a sample of Soil #$10$ and the $\%$ of particles less than $2m$ was found to be $10\%,$ what is the range of clay activity $($A$)$ that you would expect for this soil?