Diagnostic Test 3 Practice Test

An education researcher argues that extensive, specific teacher feedback—rather than the sheer number of essays written—drives students' improvement in analytical writing over a semester. Prior comparisons often confound feedback with practice volume, since students who write more typically receive more comments. The scholar insists that the critical test holds practice constant while varying the depth of feedback, with outcomes rated by blinded evaluators on a common rubric. If detailed, diagnostic comments produce larger gains than generic acknowledgments or completion credit when essay counts are equal, the claim would be strongly supported.

Which finding, if true, would most directly support the scholar's claim?

Select the underlined word or phrase that needs to be changed to make the sentence correct. Some sentences contain no error at all.

Because the oven did not heat up properly, Megan's cupcakes baked uneven; some were burnt and overdone, while others were raw and runny. No error