Concept:The passage contrasts pure science with engineering, showing that engineering applies theories under real-world constraints.
Explanation:The passage states that engineering uses physical theories for practical purposes like building bridges or reactors.
Engineers rely on physicists, but their knowledge is not identical.
Sometimes false pure theories are useful approximations, and true theories may work only under idealised conditions.
Thus, engineering adds practical knowledge by handling real-world constraints.
Option B directly captures this idea.
Option A is wrong because the relationship is not strictly linear or one-way.
Option C is incomplete because it ignores the link between engineering and pure science.
Option D misstates the difference between the two fields.
Option E contradicts the passage, which says true theories often apply only under highly idealised conditions.
Answer:Option B — Though engineering draws heavily from pure science, it contributes to knowledge, by incorporating the constraints and conditions in the real world.