By using changes of units, we will see that the correct option is d.
Which onion is heavier?
We know that the yellow onion weighs 0.59 lb
The red onion weighs 208.65 grams.
The thing we need to do, is write the first mass in grams, then we use:
1 lb = 453.59g
Then we can rewrite:
0.59 lb = 0.59* 453.59g = 267.62g
Then we can see that the red onion is heavier.
The difference in mass is:
m = 267.62g - 208.65g = 58.97g
Now we want to rewrite this in ounces, remember that:
1g = 0.035oz
58.97g = 58.97*0.035oz = 2.064 oz
Then the correct option must be d.
If you want to learn more about change of units: