To answer this question, let's understand the general viewable character limit for the subject line of an email:
Option A) 100-150 - This option is incorrect because it exceeds the general character limit for the subject line of an email.
Option B) 75-100 - This option is incorrect because it exceeds the general character limit for the subject line of an email.
Option C) 25-35 - This option is correct because it falls within the general character limit for the subject line of an email.
Option D) 45-65 - This option is incorrect because it exceeds the general character limit for the subject line of an email.
The correct answer is C. The subject line of an email generally allows for about 25-35 characters to be viewable. This is to ensure that the subject line is concise and can be easily read by the recipient.