A couple is discussing their child's education. The husband says, "The child's grades are dropping; we must reduce extracurricular activities and focus on studying." The wife says, "The child needs all-round development; we can't just focus on grades." The husband angrily responds, "If you don't want the child to have good grades, you're not responsible for the child's future!" From the perspective of the law of identity, what is the problem with the husband's statement?

Answer: A

• AThe husband substitutes "disagreeing with reducing extracurricular activities" with "not wanting the child to have good grades," and then equates that with "not being responsible for the future."✓ Correct. The wife opposes "only focusing on grades," which does not mean she doesn't want the child to have good grades, nor does it mean she is not responsible for the child's future. By substituting concepts, the husband distorts the wife's position into an absurd view, avoiding the real discussion.
• BThe husband's statement does not violate the law of identity because "not wanting good grades" and "not being responsible for the future" have similar meanings.✗ Incorrect. "Not wanting good grades" and "not being responsible for the future" are not the same concept; the former refers to attitude toward grades, while the latter refers to responsibility for overall future, with clearly different scopes. The husband replaces the original disagreement with a more severe moral judgment, which is exactly a substitution of concepts.
• CThe husband violates the law of non-contradiction because his statement and the wife's view are completely opposite under the same conditions.✗ Incorrect. The law of non-contradiction applies to "a proposition and its negation cannot both be true." The husband's statement and the wife's view are not affirmation and negation of the same proposition; the husband introduces a new assertion, so it is not an issue of non-contradiction.
• DThe husband uses the fallacy of ad hominem by attacking the wife's character to refute her view.✗ Incorrect. The husband says "If you don't want the child to have good grades, you're not responsible for the future," which is an extreme distortion and denial of the other's viewpoint, constituting a substitution of concepts, not a direct attack on the wife's character, experience, or motives.