Find the synonym of the underlined word.
A progressive tax applies greater tax rates to larger incomes than to smaller ones.

• Apply means engaging or executing something.
• Forecast means predicting or announcing something which is going to happen in future.
• Weather forecast announced that tomorrow will be a rainy day.
• Wastes means spending something carelessly. He wasted his money on a car.
• Devote refers to giving someone time, energy.She devoted herself to her studies.
• Involve refers to engage in something or participate in something.
• So, involve is the synonym of the given word.

Hence, option D is the correct answer.