Answer:
Make a general reference to the problem, not your recommendation.
Step-by-step explanation:
Given that the indirect strategy in a recommendation report is a style in which the points will first be listed and analyzed in order to impress the audience. This will suggest that the problems or points have been assessed without bias or distorting fact.
Hence, when writing a recommendation report using an indirect strategy, it is expected that the subject line by making a general reference to the problem, not your recommendation.