Christopher collected a dozen leaves from each of three oak trees. he measured each leaf from the stem to the opposite tip. part of his lab book is shown below.

christopher wants to compare the data he collected, but he made an error while recording the measurements. what did christopher do wrong?
a.
christopher did not record leaf size data for enough trees.
b.
christopher did not organize his data so that the leaf sizes are listed for each tree.
c.
christopher did not report the size of each leaf in units of length.
d.
christopher recorded part of his data in si units and part of it in english units.