Which of the following is most likely to cause issues in electronic devices?

Electromagnetic interference (EMI) is a phenomenon that can significantly disrupt the performance of electronic devices. It occurs when electromagnetic fields created by electrical equipment or radio waves interfere with the functioning of other electronic systems. This interference can manifest as noise, signal degradation, or complete failure to operate properly.

Devices such as computers, televisions, and radios are particularly susceptible to EMI because they rely on sensitive circuits to process signals. For instance, laptops might experience screen flickering or malfunctions due to nearby devices like microwaves, which emit electromagnetic waves.

In contrast, the other options relate to various aspects of computing and data management but do not directly cause physical issues with electronic devices themselves. Data Definition Language is used in databases to define data structures, Access Control Lists are used for managing permissions and security, and Computer-Aided Design refers to software used for designing and drafting in technical fields. None of these options create the type of interference that can directly affect the electronic operations of devices.