The sentence about the kids eating lunch should be corrected as "The boys slowly ate the lunch that they bought".
This is a type of mistake in which a modifier (usually an adjective or adverb) is not placed next to the word it is supposed to modify and this created a confusing or unclear sentence.
In this sentence, the modifier "slowly", which is an adverb was placed next to the verb "bought" so it seems the boys bought the lunch slowly, which is not logical.
Make sure to place the modifier next to the word it should modify, which is "eat". Based on this, the answer is "The boys slowly ate the lunch that they bought".
Learn more about logical sentences in: https://brainly.com/question/7615854