Some chunks have to be re-computed every time you re-knit the file.

Here is a more detailed explanation of each option:

• True: Some chunks have to be re-computed every time you re-knit the file because they depend on the values of other chunks that have changed. For example, if you have a chunk that calculates the total sales for a product, and another chunk that calculates the average sales per customer, the first chunk will have to be re-computed if the second chunk changes.
• False: This option is false because not all chunks have to be re-computed every time you re-knit the file. Only chunks that depend on the values of other chunks that have changed need to be re-computed.

I hope this helps!