Question: How do you break a dogbane stalk open in order to access the core wood fiber?

  Options: 
 A. Lay the dogbane stalk out on a flat surface. Press your thumb into it to flatten it longitudinally. This will cause the stalk to break in half lengthwise.
 B. Lay the dogbane stalk out on a flat surface. Press your knee into it to flatten it longitudinally. This will cause the stalk to break in half lengthwise.
Answer: A