Rearrange the following parts (1, 2, 3, and 4) in a proper sequence to obtain a correct sentence.

1. its best 2. is simply 3. science 4. common sense at

1, 2, 4, 3 4, 2, 1, 3 2, 3, 4, 1 3, 2, 4, 1

3, 2, 4, 1

Science is simply common sense at its best.