Final answer:
The error 'failure to contact the subject' refers to the failure to reach out to the intended recipient(s) of an email. To avoid this, it is important to send the email directly to the relevant individuals and use clear subject lines.
Step-by-step explanation:
The error 'failure to contact the subject' refers to the failure to reach out to the person or group that the email is intended for. In this case, it means that the sender did not successfully communicate with the recipient(s) of the email.
To avoid this error, it is important to send the email directly to the individuals who can answer the question, rather than sending it to a larger group. Additionally, using a clear and specific subject line can help the recipient easily refer back to the email in the future.
Overall, the error of failure to contact the subject can be rectified by ensuring proper communication channels and clear subject lines in email correspondence.