Sorry, but either you, your teacher, or the book author
botched this problem.  Here is why:

The statement:

A:  six of the babies have floppy ears.

cannot be the case, because of these three statements:

B. Two baby bunnies have floppy ears and long hair but are not brown.  
C. One baby bunny is brown with long hair and floppy ears. 
D. Four baby bunnies are white with short hair and floppy ears. 

Neither of the two bunnies mentioned in statement B can be the bunny 
in statement C because that bunny is brown, and those two aren't brown. 
Also neither of the two bunnies in statement B can be among the four
bunnies mentioned in statement D because those have short hair, and the
two in statement B have long hair.
Furthermore the bunny mentioned in statement C cannot be any of the
four mentioned in statement D because those four have short hair and it
has long hair.

So statements B, C, and D account for seven different bunnies all with
floppy ears, yet statement A says there are 6.

Therefore the problem is inconsistent.  Unless, of course, the statement

"six of the babies have floppy ears"

can mean "six OR MORE", and I don't think they meant that. If you
can correct the problem, we can help you with it.

Edwin