Julie is really interested in tom. she flirts with him at lunch a few times, and finally asks him out for a drink on friday. according to the authors of your text, julie's behavior is

Julie's behavior is assertive.

Explanation:

Assertiveness is a skill used during communication and during social interaction. It refers to the capacity an individual has of "reading" the situation and understanding when to act a certain way and how to act in order to have the best outcome within the interaction.

Unlike assertiveness, an individual can act in a passive or aggressive way. By being assertive, the individual is able to be calm and act in a positive way so as to avoid any misunderstandings or discussions.

In this case, Julie sees how things are going with Tom and she acts in an assertive way by flirting with him gradually until she finally asks him out, in a calm positive way, without insisting too much.

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