<h3>If something changes or is done gradually, it changes or is done in small stages over a long period of time, rather than suddenly. Electricity lines to 30,000 homes were gradually being restored yesterday. Synonyms: steadily, slowly, moderately, progressively More Synonyms of gradually.</h3><h2>Hope it helps you.</h2>
from the words main idea you can guess it can't be b or c because that doesn't make sense. its not d as well that's a different topic. so your answer is a which explains it the best. hope it helps you
