Final answer:
The revision that contains the most effective precise language is 'Mrs. Adamson whipped up a dozen scrumptious, gooey peanut butter bars for the children's Halloween party.'
Step-by-step explanation:
The most effective precise language in the given sentence is found in the revision: Mrs. Adamson whipped up a dozen scrumptious, gooey peanut butter bars for the children's Halloween party. This revision not only adds vivid and enticing adjectives like 'scrumptious' and 'gooey,' but it also specifies the type of treats ('peanut butter bars') and the quantity ('a dozen'). The use of precise and descriptive language helps paint a clearer picture for the reader and makes the sentence more engaging.
Learn more about the effectiveness of precise language in writing