Can someone help me to draw a use case and class diagram please

Michael has written an e-mail to his employees that describes a new product special that will be introduced to the customers next week. by taking time to make sure the e-mail is well written, logical, and organized, michael has made sure his message has the characteristics of a) effective communicationb) ineffective communicationc) barriers to communicationd) workplace communication

Which set of steps will organize the data to only show foods with more than 100 calories and rank their sugar content from greatest to least?

What is one potential problem associated with an organization purchasing new technology early in its lifecycle