Answer:
See explaination for the details of the answer.
Explanation:
A class is a structured diagram that describes the structure of the system.
It consists of class name, attributes, methods and responsibilities.
A mailbox and an email message has some certain attributes such as, compose, reply, draft, inbox, etc.
See attachment for the Model object classes that might be used in the system implementation to represent a mailbox and an email message.
A bus is an electrical path which data travels between the different components in an electronic device.
Answer:
The correct answer is Option 3: "Select Service"
You have to select "Service" in the Second Step.
Only after that, you'll be able to name the Service in the following step.
Other options are invalid for a given question.
Answer:
A website for a federal environmental agency.
A website run by a non-profit organization.
A paper on the environment by a university professor.
Machine Language. A series of on/off voltage pulses regulated by a clock.