Read the following passage about electricity and mark the letter A, B, C, or D to indicate the correct option that best fits each of the numbered blanks from 18 to 22.

The invention of electricity (18) ______ profoundly transforming the way people live, work, and interact with the world. Before its discovery, societies relied heavily on limited energy sources such as wood, coal, and animal power, which restricted innovation and efficiency. Electricity, which has become the backbone of modern civilization, enabled the creation of technologies that were once unimaginable.

In the late 19th century, electricity was harnessed and applied to light cities, power factories, and improve transportation, sparking the Industrial Revolution. (19) ______. Cities, for example, have grown into vibrant hubs of activity, powered by electricity and its diverse applications. It has driven industrialization, fueled technological progress, and made modern life more convenient than ever. Moreover, (20) ______.

Electricity has powered the advancement of countless technologies, shaping the future. People, using electricity for nearly every aspect of their daily lives, now rely on it for essential functions such as cooking, heating, and connecting to the digital world. Reducing dependence on inefficient traditional energy sources while promoting sustainability, (21) ______. Additionally, it plays a critical role in medical advancements, allowing the operation of life-saving equipment and technologies. Combining convenience, efficiency, and adaptability, electricity continues to inspire new inventions. Its impact is not just limited to developed countries but extends to rural and remote areas, (22) ______. Undoubtedly, electricity remains a cornerstone of progress, ensuring humanity’s path toward innovation and sustainability.