What comma usage error is found in the following sentence? Yes ...

[schs14]

What comma usage error is found in the following sentence? Yes Shane was late
  for work, but not as late as usual.
 
  a) introductory element
  b) nonessential element
  c) contrasting element

Question 2

The following sentence contains no error in comma usage: I found her to be a
  confident, intelligent journalist.
 
  Indicate whether the statement is true or false

[vboyd24]

Answer to Question 1

A

Answer to Question 2

TRUE

[schs14]

TYSM

[okolip]

Thanks for the timely response, appreciate it