The purpose of Mary's visit to the grocery store and conversation with Sam is to establish a credible alibi for herself. Within the previous hour, Mary's husband told Mary that he was leaving her. Shortly after, Mary clubbed him to death with a frozen leg of lamb.
It looks good.
You did a nice job being descriptive and your grammar looks fine.
Answer:
economic challenges due to the fact it likely has to give a certain amount of money to each employee.
