Given the question: Here's a logic test: Abigail moved her iron over the surface of a cotton dress shirt. She decided to also iron some wool socks, so she moved the iron over the surface of a wool sock. The iron was more slow in moving across the sock than it was in moving across the shirt. It was easy for Abigail to see that the surface that was smoother was (A) the cotton shirt (B) the wool sock. Choose the answer between "wool sock" and "cotton shirt".
The answer is:
wool sock