When an array is passed to a function, it is actually the array that is/are passed?

In which part of a professional email should you try to be brief, but highly descriptive?

Lucas put a lot of thought into the design for his company's new white paper. he made sure to include repeating design elements such as color schemes and decorative images. his goal was to a.add symmetry b.create a unified publication c.provide consistency d.save money

When writing a business letter, how many times can you use the same merge field in a document? once once, unless using the address block feature unlimited it will depend on the type of document you choose