Which type of evaluation allows plans for instructional adjustments based on feedback?

Formative assessment is the correct choice because it is specifically designed to monitor student learning and provide ongoing feedback that can be used by instructors to improve their teaching and make necessary adjustments to the instructional plans. This type of assessment occurs during the learning process and helps educators identify student strengths and weaknesses, allowing them to modify their instructional strategies accordingly.

In contrast, objective assessments typically focus on measuring specific knowledge or skills at a point in time, often without the iterative feedback mechanism that formative assessments provide. Summative evaluations are used to evaluate student learning at the end of an instructional unit, which means they do not offer ongoing feedback for adjustments during the teaching process. Norm-referenced tests compare a student's performance against a group, but they do not provide the timely feedback needed to enhance teaching strategies or address individual learning needs. Thus, formative assessments stand out as the most effective tool for instructional adjustment based on feedback.