Particle Physics by WengerAS

Question 9

The greatest limitation of current particle-based "theories of everything" is their failure to account for gravity and/or their contradiction of experimental evidence supporting general relativity. Perhaps the problem is that particles themselves are not fundamental enough. Please name the THEORY which posits that elementary particles are not fundamental, but rather "vibrational modes" of more fundamental objects, themselves one-dimensional field excitations typically described with an everyday word.

String theory