Saving energy is crucial for (24) reasons.

Read the following passage and mark the letter A, B, C, or D to choose the word or phrase that best fits each of the numbered blanks from 24 to 28.
Saving energy is crucial for (24) ______ reasons. First, it helps preserve natural resources such as coal, oil, and gas. Second, reducing energy consumption decreases our carbon footprint, (25) ______ is essential for a healthier planet. Third, being environmentally-(26) ______ means making choices that support sustainability and minimise harm to the environment. Using renewable energy sources such as solar and wind power can help achieve this goal.
(27) ______, saving energy not only benefits the environment but also saves money on utility bills. By adopting energy-efficient practices and technologies, individuals and businesses can contribute to a more (28) ______ future, which is vital for the well-being of current and future generations.