If a prescription specifies a quantity of 200 mL, what would be the equivalent bottle size?

The prescription specifies a quantity of 200 mL. To determine the equivalent bottle size, it's helpful to know the conversion between milliliters and ounces. There are approximately 30 mL in 1 ounce.

Calculating the volume in ounces for 200 mL involves dividing 200 by 30, which results in approximately 6.7 ounces. This means that a bottle larger than 6.7 ounces is needed to accommodate the full 200 mL without exceeding it.

Considering the provided options, an 8-ounce bottle is suitable since it can comfortably hold the 200 mL, while 6 ounces would be insufficient. The 4-ounce and 2-ounce sizes would also be inadequate for the full amount specified in the prescription. Therefore, an 8-ounce bottle is the correct equivalent size for a prescription specifying 200 mL.