PART A; Which of the following identifies the central idea of the text

Based on the cause-and-effect relationship in this sentence, what is the meaning of the word illuminate? the colors and patterns on the stained glass windows were illuminated as thousands of candles burned during the special church service. a) to melt or change form b) to grow taller or wider c) to become extremely hot d) to light up or make clear

What is the main idea of this paragraph from the volcanoes section of the ready. gov website

What effect does the revelation of nachiketas's reception of shraddaha in part ii have upon the reader's perception of the unfolding story?