Text: this will give you your waist size.

Correct capitalization: This will give you your waist size.

Text: a poor delivery of the question (e.g., lack of intention) is flunked.

Correct capitalization: A poor delivery of the question (e.g., lack of intention) is flunked.

Text: please follow the simple steps provided below for deleted file recovery emptied from recycle bin with the help of recover deleted files software:

Correct capitalization: Please follow the simple steps provided below for deleted file recovery emptied from Recycle Bin with the help of Recover Deleted Files software:

Text: he remained there for a few months until the death of his friend and teacher and then returned to croton.

Correct capitalization:
He remained there for a few months until the death of his friend and teacher and then returned to Croton.