Answer:
[tex]10^{-35}\ meters[/tex]
Explanation:
The string theory is a theoretical concept, the very small particles of particle physics are rep[laced by strings. This theory also applies to black hole physics, nuclear physics, cosmology etc.
According to string theory, six space-time dimensions cannot be measured except as quantum numbers of internal particle properties because they are curled up in size of the order of [tex]10^{-35}\ m[/tex].
The length of the scale is assumed to be on the order of [tex]10^{-35}\ m[/tex]. Hence, the correct option is (a).
