The correct answer is C. Application
Step-by-step explanation:
When employers pre-screen job candidates they verify basic information about candidates such as background, education, skills, experience, etc. to determine if a candidate is suitable for a job and he/she should be interviewed or continue in the process of selection for the job.
In this context, the two main tools used by employers are the resume and the job application. These two documents provide information about the candidate's education, experience, skill, and similar but in the case of the application the information es concise and very specific, while resumes are more detailed and the candidate can include as much information as she/he wants. Thus, the two prescreening tools for job candidates are the resume and the application.