Select the option that can be used as a one-word substitute for the given group of words.
The act or process of going from the simple or basic to the complex or advanced.

The correct option is Evolution.

Let's analyze the given definition and the options to understand why:

Given phrase: "The act or process of going from the simple or basic to the complex or advanced."

Detailed breakdown of options:

1. Evolution: Refers to the gradual development of something, especially from a simple or basic form to a more complex or advanced state. This directly matches the given definition.

2. Wither: Means to become dry, shriveled, or to decay/fade away, which is unrelated to advancing or developing.

3. Ennoblement: Means the act of giving someone a noble rank or title, or making someone/something noble and dignified.

4. Flourishing: Means growing or developing successfully and luxuriously, but it does not specifically denote the process of moving from a simple state to a complex state.

Therefore, Evolution is the correct one-word substitute.