Need with this(i have the picture of the problem)

Okay, So first things first, I'm going to use 0 for circle/female and # for square/male.

R= recessive

D= dominant

I'm going to start at the top of the pedigree and work my way down.

Answer 3!

0= DR      #=DR

0=RR      0=DD      #=DR      #=RR      #=DR

#=RR      0=RR      0=DD or DR

Answer 4!

0=DR      #=DR      0=RR      #=DR

0=DD or DR      #=RR      0=DR      0=DR or DD

#=RR      #=RR      0=DD or DR

Answer 5!

#=RR       0=DR

0=RR      #=DR      0=RR      #=DD or DR      0=RR

0=RR      0=DD or DR      #=DD or DR       #=DD or DR

answer; ///the correct answer to the above question is (

1. efficient use of space

2. elimination of groundwater contamination

3. energy generation

4. lower carbon footprint