Read this excerpt from the secondary source "abraham lincoln's boyhood home at knob creek."
likewise, he never forgot the time he fell in the swollen knob creek while playing on a foot log near his home. had it not been for austin gollaher, a friend and school mate, abraham would probably have drowned. austin, with a keen sense of pioneer knowledge, grabbed a long tree limb from the bank and held it out like a strong arm to the struggling lincoln. abraham spoke of the incident after he became president.
based on this passage, lincoln
a. achieved his presidency without from others.
b. stopped thinking about his childhood later in life.
c. was reluctant to accept or acknowledge as a child
d. showed gratitude towards those who him.