Arellia believes that people should tell it like it is when communicating with others because being up-front saves time and energy in the long run. Arellia's guiding principle in verbal communication is

Directness

Explanation:

Directness communication happens when people are face to face, which is the most commonly used form. Thus the best way to understand the message said is to generate answers that meet the expectations of the recipient. This is a communication that favors interactions between individuals, because it occurs in person, being easier to understand and faster to resolve conflicts.

With this concept, we can conclude that if Arellia believes that people should say what it is like when communicating with others, because being frank saves time and energy in the long run, Arellia's guiding principle in verbal communication is directness.