Which of the following tools is commonly used in business analytics?

R is a programming language and software environment specifically designed for statistical computing and data analysis, making it a quintessential tool in business analytics. It provides a wide array of packages and functions tailored for data manipulation, statistical testing, and creating data visualizations. R's robust ability to handle large datasets and perform complex analyses makes it invaluable for business analysts seeking to extract insights from data, perform predictive modeling, and implement data-driven decision-making.

The other options, while useful in their respective contexts, do not possess the specific capabilities required for in-depth data analysis. Photoshop is geared towards graphic design and image editing, PowerPoint is primarily a presentation tool, and Notepad is a simple text editor with limited functionality for the tasks typically involved in business analytics. In contrast, R is purpose-built for the analytical processes central to business strategy and performance evaluation.