D. It does not have a verb and it is not a complete thought
The first sentence is that begins with his conscience was clear... and ends with he left all his cares to heaven. That is a common suggestion when one prays, that is, leaving all our cares to heaven. Somewhere the Bible says that we should put our problems in God's hands.
The second sentence confirms the one above. The second sentence begins "in the morning, after he had said his prayers ... "
Dashes are used to add emphasis or change a topic, as they can either give more importance to an idea or just interrup the idea with another one.
Ellipsis is used to remove unwanted parts of a long quotation and is mostly represented by three consecutive periods. It helps omit unnecesary elements within a sentence.
Commas are used to separate clauses, phrases, coordinating adjectives and non-essential words. Commas usually indicate pauses and they are used to separate ideas within a sentence.
