What needs to be emphasized in this step when reading?
"Turn the two bottle assembly over, and place the assembly on a table with the filled bottle on top. Watch the water slowly drip
down into the lower bottle Now, rapidly rotate the bottles in a horizontal circle a few times. Observe the formation of a
funnel-shaped vortex..."
a. rapidly rotate the bottles in a horizontal circle c. both A and B
b. Watch the water
d. neither A nor B

Ithink the answer is b. shakeri hope im not wrong : )

Bob: coke is baby pandas.jim: what? how do you figure that coke is baby pandas? bob: because this book says so.jim: how do we know the book is correct? bob: because it says that coke is baby pandas.jim: how does that prove the book's accuracy? bob: because it's statement involving coke and baby pandas is correct, therefore it is accurate.jim: how do we know that it's correct? bob: because we have concluded that the book is accurate, and therefore the statement is correct.therefore, coke is baby pandas.

True. r u cheating on a test. bro not cool.