How should Mr. Johns respond to Ginny's parents regarding her test answer?

Mr. Johns should choose to agree to meet, listen to Ginny's parents' concerns, and then explain that an important component of math is understanding reasonable answers. This approach shows that he values the parents' input and is willing to engage in a constructive conversation about Ginny's performance.

By meeting with the parents, Mr. Johns demonstrates a commitment to transparency and communication, which is important in building trust between educators and families. Listening to their concerns allows him to understand their perspective fully, which can help in addressing any misunderstandings or anxiety they may have regarding Ginny's test performance.

Additionally, explaining the concept that understanding reasonable answers is a key part of mathematics can aid the parents in recognizing that mathematics is not just about getting the right answer but also about the reasoning process behind it. This educational component reinforces the learning goals for students and highlights Mr. Johns' role in guiding students through the nuances of mathematical thinking.

In contrast, other options do not facilitate a productive dialogue. Sending the test home could lead to more confusion without addressing the parents' concerns directly. Stating upfront that the grade will not change could come across as dismissive, and offering a phone call instead of a conference might not provide the depth of engagement needed for such a