[amp_mcq option1=”128″ option2=”64″ option3=”256″ option4=”32″ correct=”option3″]
The correct answer is C. 256.
An 8-bit register can store 256 different values, from 0 to 255. This is because 2 to the power of 8 is 256.
Option A is incorrect because 128 is not a power of 2.
Option B is incorrect because 64 is not a power of 2.
Option D is incorrect because 32 is not a power of 2.