Answer:
D
Explanation:
Illuminating gives the reader the idea that some new information has been brought to attention, but that is not the case in this text. Enlighten means to give some a better, deeper knowledge on something, which better fits here. Component means part of an element, to narrow compared to elements incontext.
Your best answer here would be D, enlightening, and elements.
Im assuming you mean the light-dependent reaction? if so the answer is the 3rd one
It's a fundamental law of how the universe organized.
