Which of the following is NOT an example of sexual harassment?

The selection of asking someone to a group lunch as not being an example of sexual harassment is accurate because this action is generally considered a neutral social invitation rather than an unwanted advance. In the context of workplace interactions or casual settings, extending an invitation to lunch, especially in a group, does not inherently carry a connotation of harassment.

Sexual harassment typically involves behaviors that create a hostile or intimidating environment, such as making inappropriate jokes, unwanted physical contact, or repeatedly asking someone on dates after they have expressed disinterest. These actions are more likely to be perceived as invasive or disrespectful, whereas a simple, inclusive invitation to lunch does not violate personal boundaries or imply any form of pressure. Thus, this choice rightly indicates an absence of harassment.