Final Answer:
The final answer is (d) At everyday speeds and energies. becauseClassical physics is a suitable approximation to modern physics at everyday speeds and energies because, under these circumstances, the deviations between classical and modern theories are negligible.
Step-by-step explanation:
Classical physics is a good approximation to modern physics under certain circumstances, specifically at everyday speeds and energies. In the realm of macroscopic objects and velocities commonly encountered in daily life, classical physics provides accurate predictions and explanations.
This is because classical physics, as formulated by Newtonian mechanics, is well-suited for describing the motion of objects at typical speeds and energies found in our day-to-day experiences.
However, when dealing with extremes such as very high speeds, small scales, or low energies, classical physics starts to deviate from the predictions of modern physics, which is better described by theories like relativity and quantum mechanics.
At extremely high speeds, relativistic effects become significant, necessitating the use of Einstein's theories of special and general relativity.
On the other hand, at very small scales and low energies, quantum mechanics governs the behavior of particles, introducing phenomena like wave-particle duality and uncertainty.
In summary, while classical physics works well in our daily lives, exploring the extremes of speed, scale, and energy requires the application of modern physics theories for more accurate and comprehensive descriptions of physical phenomena.
Therefore, the correct answer is option D