Multiple Choice
Why might it be impossible for us to observe the very massive particles predicted by string theory?
A) They are not actually particles, but just points in space.
B) Extremely high energies are needed to create these particles.
C) The fundamental strings that make up these particles vibrate at frequencies we cannot detect.
D) The particles do not exist in three-dimensional space.
Correct Answer:

Verified
Correct Answer:
Verified
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