The four sentences (labelled $1, 2, 3, 4$) given below, when properly sequenced would yield a coherent paragraph. Decide on the proper sequence of the order of the sentences and key in the sequence of the four numbers as your answer.
The right order is CDBA.
Remember, the right order is always the most coherent paragraph.
Here, Option C is the most apt opening argument. Option D follows this by defining teleology. Option B follows this, and the entire paragraph is concluded by Option A.