Which part of a Mac can be affected by too much pressure resulting in mura?

The correct answer is the LCD, which stands for Liquid Crystal Display. When excessive pressure is applied to the screen of a Mac, it can lead to a phenomenon known as mura. This is a defect characterized by uneven brightness and color inconsistencies on the display, often appearing as blotchy areas. This occurs because the liquid crystals within the LCD can become misaligned or damaged when subjected to too much force, affecting the overall quality of the display.

The other components, such as the keyboard, trackpad, and battery, are not as directly impacted by external pressure in the same way that the LCD is. For instance, while a keyboard might experience issues with stuck keys if pressure is applied, it does not exhibit damage similar to the mura effect seen in LCDs. The trackpad can become unresponsive if pressed hard, but it does not display visual anomalies. Additionally, while excessive pressure can physically impact a battery, it would typically result in more serious damage such as swelling or leakage rather than visual defects like those seen on an LCD screen. Therefore, the LCD is uniquely susceptible to the effects of pressure in this context.