When presenting an idea to his colleagues, Marcus failed to consider others' views and got defensive when people questioned his proposal. Marcus' failure to handle the situation indicates a lack of skills.

collaboration                                                

Explanation:

Collaboration skills: The term "collaboration skills" is described as a phenomenon that involves an individual working with that of some other person to produce or create something. However, the collaboration skills tend to enable different people within a particular organization or outside that organization to involve or engage with the other members efficiently and productively.

In the question above, Marcus' failure to handle the situation indicates a lack of collaboration skills.

barack obama he actually listens