Firstly, let us find the range of the first litter of puppies:
The lowest weight is 4 and the highest weight is 9.
Therefore, the range is
[tex]\begin{gathered} 9-4 \\ =5 \end{gathered}[/tex]
The question says that the 2nd litter has the same median weight as the 1st.
The range of the 1st litter is 7
Comparing with the options, only Options A and B have a median of 7.
The question further says that the second litter has a range greater than the 1st, which is 5.
Comparing options A and B,
Range of option A
[tex]\begin{gathered} 10-5 \\ =5 \end{gathered}[/tex]
Range of option B
[tex]\begin{gathered} 11-5 \\ =6 \end{gathered}[/tex]
Option B has a greater range. OPTION B is correct.