Answer:
Birds 
Gerbils 
Fish 
Hamsters 
Step-by-step explanation:
From the question we are told that:
Sales
Number of birds 
Number of gerbils 
Number of fish 
Number of hamsters
Generally the frequency for birds
is mathematically given b



Generally the frequency for Gerbils
is mathematically given b



Generally the frequency for fish
is mathematically given b



Generally the frequency for fish
is mathematically given b



We need to find out how much is worth one yard in both fabrics, so we divide $15.00 by 2 and $37.50 by 5:
$15.00 ÷ 2 = $7.50 per yard
$37.50 ÷ 5 = $7.50 per yard
As both prices per yard are the same, the answer is: <span>Yes, these fabrics have the same unit cost.</span>
The answer is D) because C) and B) are biased and would not be reasonable and A) has no guarantee of every third child being 12.