1. Google Drive, Microsoft One Drive and Dropbox are examples of cloud storage services.

2. Microsoft OneDrive is a file hosting and synchronization service provided by Microsoft. It lets users store files, and share personal data and files. It offers 5 GB of free storage space.

3. Google Drive is a file storage and synchronization service provided by Google. It allows users to store files and personal data and share files. It offers 15 GB of free storage space.

4. Cloud-Based Storage: Both OneDrive and Google Drive store files in the cloud, making it easy for users to access their files from anywhere with an Internet connection.

The language considered the "foundation stone" for teaching languages like FORTRAN, ALGOL, PASCAL, and many others is ALGOL (Algorithmic Language). ALGOL was a significant early programming language that influenced the design of subsequent programming languages, providing important concepts and structures used in the development of languages like FORTRAN, PASCAL, and C. While BASIC is also a widely used beginner-friendly programming language, ALGOL had a substantial impact on the development of programming language theory and design.

Answer: A) Memory Explanation: In a computer, the area where the data is stored for the quick access by the computer's processor is called Main storage or Primary storage or Memory or RAM.   Hence, main storage is also called Memory.