Answer:
A certain cool headed ness had come to him
Doggedly he swam in that direction, swimming with slow deliberate strokes conserving his strength
Explanation:
These show that he can stay calm and logical even when forced into stressful situations.
A; the other answers don't tell you any real extra information about what other words in the sentences are/mean.
You would find the names of the chapters in the table of contents. The awnser is D.
