However, the plesiosaur theory is not the only one. Many other ideas attempt to explain the sightings and "photographs." But two separate sonar surveys of the loch have not found any evidence of a creature larger than a salmon. The last survey,1 completed in 2007 by the British Broadcasting Company (BBC), involved 600 different sonar beams. Using satellite navigation systems, the team made sure every inch of the loch was searched. The team found nothing. What is the main idea of the bolded paragraph?
To explain the different theories surrounding the Loch Ness mystery
To explain the reasons people still believe that the Loch Ness Monster exists
To explain the ways people have tried to solve the Loch Ness Monster mystery
To explain why a plesiosaur cannot be Nessie

I think that the answer would be To explain the ways people have tried to slove the Loch Ness Monster mystery because ot showed dufferwnt surveys. It only mentioned one theory so it is not A. It didn't explain why people still bekieve in the loch ness monster so it is not B. It did not explain my a plesiosaur is not Nessie so it os not D either. So the answer should be C

Explanation:

the cost of attendance or coa is an approximate budget for the cost of attendance of the whole academic year. in order to calculate this, universities take into consideration many factors like room and board, tuitions and fees, books, transportation and personal expenses such as medicine, laundry, clothing. all these factors combined make up the final sum to the cost of attendance in each university.

? ? what can you explain this to me i am so confused