Answer:
use, utilize and engage higher-level abstraction to present the overall goal, followed by lower-level abstractions when he will explain exactly on how to complete the task.
Step-by-step explanation:
John will use the high - level abstraction to present the goals to them. This will mean a general presentation of the goals. Everyone get to know and be acquainted with the goals.
Meanwhile, John will use the low-level abstraction to properly communicate to them proven ways and direction by which the goals can be be achieved.