Final answer:
Javier likely needs to develop his ability to respond appropriately to others' emotional cues, as he did not match Hartman's enthusiasm in his response.
Step-by-step explanation:
In the scenario presented, Javier's response to Hartman's excited announcement was subdued, suggesting that he may need to develop his ability to respond appropriately to others' emotional cues (Option D). Javier's reaction does not match the level of enthusiasm and excitement expressed by Hartman, indicating a potential gap in emotional intelligence, particularly in the aspect of social awareness and relationship management. This ability includes understanding and acknowledging others' emotional states through verbal and non-verbal communication, and responding in a manner that is congruent with the social context.