Which of the following is a non-volatile memory card format for use in portable devices?

The Secure Digital (SD) card is a non-volatile memory card format that is widely used in portable devices such as cameras, smartphones, and tablets. Non-volatile memory means that the data stored on it is retained even when the power is turned off, making it ideal for portable applications.

SD cards are known for their compact size, ease of use, and a variety of speed and capacity options to meet the needs of various devices and usage scenarios. They have become a standard format for removable storage in consumer electronics due to their versatility and reliability.

While other formats, such as Compact Flash, MultiMediaCard, and Memory Stick, also serve the purpose of data storage in portable devices, SD cards are among the most commonly used in the consumer market, which highlights their popularity and practicality as a non-volatile memory storage solution.