ANSWER
Brand D
STEP BY STEP EXPLANATON
1. For Brand A:
if $1.50 gives 10 ounces,
then $1 will give 10/1.50 = 6.67 ounces
2. For Brand B:
if $1.40 gives 12 ounces,
then $1 will give 12/1.40 = 8.5 ounces
3. For Brand C:
if $1.74 gives 14 ounces,
then $1 will give 14/1.74 = 8.05 ounces
4. For Brand D:
if $1.84 gives 16 ounces,
then $1 will give 16/1.84 = 8.69 ounces
Hence, with just $1 you will get 8.69 ounces in Brand D