A 32 bit microprocessor accesses the data at a memory location which is multiple of 4 faster. Why?

Question

A 32 bit microprocessor accesses the data at a memory location which is multiple of 4 faster. Why?

Answer 1

The data bus and memory locations of the 32bit processor are 32b wide; while for an 8b processor are 8 bits wide.

So, for the same clock rate and efficiency of instructions, the 32b processor moves 4 bytes, while the the 8b processor moves only 1. Thus, 4x faster.