Final answer:
The key component for a final written training objective related to the statement "Joe will be able write a short two-page story without making grammatical or spelling errors" is to focus on improving Joe's writing skills and accuracy in grammar and spelling.
Step-by-step explanation:
The key component for a final written training objective related to the statement "Joe will be able write a short two-page story without making grammatical or spelling errors" is to focus on improving Joe's writing skills and accuracy in grammar and spelling. This objective emphasizes the importance of writing a coherent and error-free story.