QUESTION: Fix punctuation: The responsibility for this task must necessarily be given to a limited group of people Rousseau thought that this either had to be an aristocracy or a monarchy because the only democracy he knew of was the Greek polis the city state with its direct democracy which in practice only worked in small communities
ANS: The responsibility for this task must necessarily be given to a limited group of people. Rousseau thought that this either had to be an aristocracy or a monarchy, because the only democracy he knew of was the Greek polis, the city state, with its direct democracy, which in practice only worked in small communities.

QUESTION: Fix punctuation: Unstable angina is often a precursor to a heart attack
ANS: Unstable angina is often a precursor to a heart attack.

QUESTION: Fix punctuation: Support has also been added for the ext4 and Btrfs filesystems and on the kFreeBSD architecture the Zettabyte filesystem ZFS
ANS: Support has also been added for the ext4 and Btrfs filesystems and on the kFreeBSD architecture the Zettabyte filesystem (ZFS).

QUESTION: Fix punctuation: Jayson Derrick has no position in some of said shares Motley Fool has no position in some of said shares
ANS:
Jayson Derrick has no position in some of said shares. Motley Fool has no position in some of said shares.