Answer with explanation:
Number of Days in week =7
Probability of selecting any day out of Seven days is

The meaning of Simple random Sampling is that each day has equal chance of getting selected.
Number of tables produced in each day of the week = 20 dining table
⇒≡Selecting any day out of 7 days and then choosing any of the single day for checking whether 20 tables are produced on that day or not is ,YES ,a Simple Raqndom Sampling.