Which of the following is a widely used GIS software for spatial analysis?

ArcGIS is widely recognized as a leading GIS software that provides comprehensive tools for spatial analysis. It features a robust set of functionalities that enable users to manage, analyze, and visualize geographic data effectively. ArcGIS supports complex modeling and spatial analysis tasks, allowing users to perform operations such as overlay analysis, buffer zone creation, and other advanced geospatial techniques.

The software is designed for a range of professional applications, including environmental analysis, urban planning, and resource management, making it a go-to choice for professionals in the GIS community. Its integration with other software and tools, along with extensive support for various data formats, enhances its ability to perform detailed spatial assessments.

While other options listed have their merits in different areas, they do not offer the same level of specialized tools for geographic analysis as ArcGIS, making it the correct answer for this question.