Instructional aids used in the teaching/learning process should be:

The focus on selecting instructional aids that are compatible with the learning outcomes to be achieved is essential because it ensures that the aids enhance the overall teaching and learning process. Instructional aids serve as tools to facilitate understanding and reinforce key concepts, and when they align closely with the desired outcomes, they become more effective in supporting learners' achievement.

Choosing aids based on compatibility with learning outcomes encourages instructors to think critically about the relevance and appropriateness of the materials for the specific goals of their lesson. This alignment helps create a cohesive educational experience where students can understand how the aids relate to the knowledge or skills they are meant to acquire, promoting engagement and retention.

In contrast, the other options may not necessarily support effective instructional practices. For example, while the idea of instructional aids being self-supporting and requiring no explanation seems appealing, most aids may need some level of context or guidance for optimal use. Additionally, selecting aids prior to developing the lesson plan can limit flexibility, as understanding the lesson's flow and student needs often informs what aids will be most beneficial. Lastly, confining instructional aids to only visual formats overlooks the diverse ways in which students learn, as some may benefit from auditory or kinesthetic materials as well. Thus, the correct answer emphasizes the importance of strategic