Introduction:
The question asks which student would find a tightly structured lesson of Physics taught with little flexibility the least conducive to their learning. The correct answer is option 'D', which states that a hyperactive student would find this teaching method least conducive to their learning. This answer can be explained by considering the characteristics of a hyperactive student and how they may be affected by a rigid teaching approach.

Explanation:
1. Hyperactivity:
- Hyperactive students often have difficulty sitting still, paying attention, and focusing for extended periods.
- They may exhibit impulsive behavior and have a high level of physical energy.
- These traits can make it challenging for them to engage in traditional classroom settings that require quiet and focused attention.

2. Tightly Structured Lesson:
- A tightly structured lesson refers to a teaching approach that follows a rigid and inflexible format, leaving little room for adaptation or individualization.
- This type of lesson typically involves a strict adherence to a predetermined curriculum, timeline, and instructional methods.

3. Lack of Flexibility:
- When a lesson lacks flexibility, it means that the teacher does not have the ability or willingness to modify the instructional methods or pace to accommodate individual needs or learning styles.
- This can be detrimental to students who require alternative approaches or additional support to fully comprehend the concepts being taught.

4. Impact on a Hyperactive Student:
- A hyperactive student may struggle to stay engaged and focused in a tightly structured lesson due to their natural inclination towards movement and impulsivity.
- The lack of flexibility may limit their ability to explore topics in a way that aligns with their learning style.
- They may become restless, easily distracted, and exhibit disruptive behavior, which can hinder their learning and that of their peers.

Conclusion:
In conclusion, a tightly structured lesson of Physics taught with little flexibility is least conducive to the learning of a hyperactive student. The characteristics of hyperactivity and the rigid nature of the teaching approach create a mismatch that hinders the student's ability to engage, focus, and learn effectively. Providing flexibility and incorporating strategies that accommodate their needs can enhance their learning experience and promote better comprehension of the subject matter.