QUES: Mechanical preparation is the most common method of preparing materialographic samples for microscopic examination

correct the punctuation.

CORRECTED: Mechanical preparation is the most common method of preparing materialographic samples for microscopic examination.

QUES: You have to buy the full version of this software to save the recovered folders

correct the punctuation.

CORRECTED: You have to buy the full version of this software to save the recovered folders.

QUES: But also the mature and dry skin appreciates jojoba oil because of its moisturebinding properties

correct the punctuation.

CORRECTED:
But also the mature and dry skin appreciates jojoba oil because of its moisture-binding properties.