If you reversed the order of paragraphs 1 and 2, the correct response would be:
Readers would lack the context to understand what a centrifuge is and why it is important.
This is because the first paragraph likely introduced the topic of the centrifuge and its significance, while the second paragraph might have provided specific information about Manu Prakash and his project. Reversing them could confuse readers about the fundamental concepts before introducing them to specific details.