Final answer:
The basic method that LMS uses to forecast weekly/daily Guest Counts is Last Year's Guest Count + Guest Count Trend + Adjustments.
Step-by-step explanation:
The basic method that LMS (Local Marketing System) uses to forecast weekly/daily Guest Counts is option D: Last Year's Guest Count + Guest Count Trend + Adjustments. This method takes into account the previous year's guest count as a starting point and then factors in the guest count trend and any adjustments that may need to be made.