Answer: Assumed similarity
Explanation: Assumed similarity may be viewed as a false perception which occurs when an assessor or individual incorrectly perceives that another individual shares the same characteristics as theirs. It may be regarded as the assumption that a different cultural or social group will share similar characteristics with one's cultural or social affiliation.
In the scenario above, Lucia has assumed a similarity between the breakfast menu of restaurants in the United States to those in Kwan Island. Here, Lucia's perception is that all restaurants will have the same menu to those in the United States.