a$.(3$ points$)$ Broadly speaking, how does the concept of a block $($also known as line$)$ improve memory accesses by the microprocessor?

b$.(3$ points$)$ An address has already been aligned to $0$x$1234.$ If you know that the block size is $16$ bytes, what range of addresses are contained in this block?

c$.(3$ points$)$ A microprocessor with a single logical core has two cache levels. Explain how the microprocessor fetches a value from memory.