Final answer:
The detail from the text that supports the statement is that school officials searched Megan's locker and took her cellphone without her consent.
Step-by-step explanation:
The statement from the text that supports the argument that Megan's parents would likely argue that school officials examined Megan's phone without consent is option B: "The next day, school officials searched Megan's locker for any incriminating evidence. They took her backpack and cellphone from her locker while she was in class."
This detail shows that school officials searched Megan's phone without her consent, as they took her phone from her locker without her permission.