Final answer:
Bonnie mixes 2 ml of vinegar with every 1 ml of soy sauce.
Step-by-step explanation:
To find how much vinegar Bonnie mixes with every 1 ml of soy sauce, we can divide the amount of vinegar by the amount of soy sauce.
Bonnie mixes 150 ml of soy sauce with 100 ml of vinegar. So, to find the ratio of vinegar to soy sauce, we divide 100 ml by 150 ml: 100/150 = 2/3. This means that for every 1 ml of soy sauce, Bonnie mixes 2/3 ml of vinegar.
So the answer is D) 2 ml of vinegar.