The correct answer is A. To give instructions on how to make a pinhole viewer in order to see a solar eclipse
Step-by-step explanation:
The text presented explains what an eclipse is as well as the process to make a pinhole viewer to observe this natural phenomenon. and avoid the eye damage this might cause. Due to this, the text shows mainly a sequence structure through words such as first, second, next, then and finally that helps the author to provide the reader precise and clear instructions on how to make a pinhole viewer. Thus, the sequence structure of the text is used to give instructions to the reader (Option A).