The old can have the joy of seeing their children making progress in life: they can watch their grandchildren growing up around them, and perhaps best of all, they can, if their life has been
The old can have the joy of seeing their children making progress in life: they can watch their grandchildren growing up around them, and perhaps best of all, they can, if their life has been a useful one, feel the happiness of having come (60) _________ the battle of life safely and of having reached a time when they can lie back and rest, leaving others to continue the fight.
A. out
B. across
C. through
D. back