Final answer:
The correct option to keep the last requirement in a 5 year, 6 month recency requirement is 30 days.
Step-by-step explanation:
The question is asking about the 'Recency Requirement' which has a duration of 5 years and 6 months. The student is asked to choose an option that keeps the 'last requirement', meaning the requirement that comes after 5 years and 6 months. Option d) 30 days is the correct choice, as it is less than 5 years and 6 months, ensuring that the last requirement is met. This option ensures that the last requirement falls well within the 5 years and 6 months duration, as it is significantly less than the specified time frame. By selecting this option, the student adheres to the recency requirement, guaranteeing that the skills or qualifications remain current and relevant.