Explanation:

- Sentence B introduces the concept of happiness and progress.

- Sentence C follows logically, discussing how different people derive happiness from varying sources.

- Sentence A then elaborates on universal desires such as health and economic security.

- Sentence D concludes, tying the idea of progress to contributions toward happiness-related growth factors.

These connections lead us to the correct order, BCAD, forming a coherent narrative. Let’s consider the options:

- Option 1 (BDCA): Ends awkwardly; C does not logically follow D.

- Option 2 (ABCD): Jumps to again consume same concepts without flow; leads to confusion.

- Option 3 (BCAD): Flows naturally, establishing logical progressions to the conclusion.

- Option 4 (DBCA): Begins with D, abruptly starting with conclusion.