Writing and reading from and to SRAM memory
No, the word lines will be driven by a 2-to-4 decoder, where one and only one of the four outputs is asserted at any given time. Using multiplexers with some of their inputs tied to 1 or 0 is a horribly wasteful way to create a logic function.

If you only want one output bit then a 4:1 multiplexer is used to select one of the column lines (or bit lines, as they are usually called).

The sense amplifiers are located near the output multiplexer, typically at the bottom of the array as you have drawn it. They convert the small changes in the two bitline voltages into a valid logic level, and may also provide precharge voltages for the bitlines.