Short Answer 
The analogy “Cover : Reveal :: Flag : Strengthen” illustrates opposing concepts, where “Cover” hides and “Reveal” exposes, while “Flag” requires support to be effective, just as “Reveal” is necessary for uncovering. Each pair demonstrates a significant interrelationship in terms of negation and support.
Step 1: Understand the Relationship of Words
To comprehend the analogy, one must first grasp how the pairs of words relate to each other. In this case, the pairing of Cover and Reveal demonstrates an opposing relationship where one word negates the effect of the other. Cover acts as a barrier, while Reveal signifies the act of uncovering or exposing.
Step 2: Identify the Second Pair
The next task is to find the corresponding relationship in the second pair. Here, Flag is correlated with Strengthen, suggesting that a flag must be supported to serve its purpose. Just as revealing an item requires uncovering it, a flag signifies a need for enhancement or backing.
Step 3: Conclude with the Overall Analogy
Finally, bring the insights together to confirm the overall analogy. Both pairs consist of terms with strong interrelated meanings. Therefore, the connection is:
- Cover negates by hiding, leading to Reveal, which exposes.
- Flag necessitates Strengthen to be effectively utilized.
This solidifies the analogy as a correct representation of oppositional and complementary relationships.