QUESTION: Fix punctuation: If delivery is crucial force of gravity which contributes to the rapid advance of the fetus to birth canal
ANS: If delivery is crucial force of gravity, which contributes to the rapid advance of the fetus to birth canal.

QUESTION: Fix punctuation: The lumberjacks were paid with monthly checks and Seattle businesses charged a substantial fee ranging from ten to twenty percent to cash those checks Pennell would cash the checks for free
ANS: The lumberjacks were paid with monthly checks and Seattle businesses charged a substantial fee ranging from ten to twenty percent to cash those checks. Pennell would cash the checks for free.

QUESTION: Fix punctuation: A much discussed enigmatic first stuff the Prima Materia was brought out of the Paradise by Adam according to writings of antiquity
ANS: A much discussed, enigmatic "first stuff", the Prima Materia, was brought out of the Paradise by Adam, according to writings of antiquity.

QUESTION: Fix punctuation: Can I change my size after I placed my order
ANS:
Can I change my size after I placed my order?