Read the Following Argument and Assess Which Method of Using

Multiple Choice

Read the following argument and assess which method of using evidence is being employed:
"We need to paint our workroom walls orange.Productivity normally increases by 20% when
Walls are painted orange according to Kenneth Johnson."

A) Method 1: Assertion plus evidence plus source.
B) Method 2: Assertion plus evidence.
C) Method 3: Assertion plus evidence plus source plus qualifications of source.
D) Method 4: Assertion plus firsthand experience.