What is the most cost-effective way for Mrs. Tomey to increase her computer's capacity?

Increasing computer memory is a highly cost-effective method for enhancing a computer's capacity. Memory, or RAM, plays a crucial role in determining how many tasks a computer can handle simultaneously and how quickly it can process data. By adding more RAM, Mrs. Tomey can improve her computer's performance for running applications, handling multiple tasks, and processing information more efficiently without the need for a significant financial investment that would come with replacing the entire computer.

While upgrading the operating system may provide some benefits, it often requires additional resources, such as more memory or processing power, to run efficiently. This means it may not directly enhance capacity without the other upgrades. Adding external storage devices can also be helpful for increasing storage capacity, but it does not enhance the computer's operational speed or efficiency in the same way that increasing RAM does. Therefore, increasing computer memory stands out as the most effective and cost-efficient choice for boosting operational performance.