1)What operation is performed when adding an element to a stack? A. Push operation B. Pop operation (removes an element) C. Enqueue operation (adds to a queue) D. Insert operation (adds at a specific index) 2)How are linear data structures defined? A. A structure where elements are stored sequentially and can be traversed in a single run. B. A structure that requires complex algorithms for data retrieval and manipulation. C. A structure where elements are stored randomly and accessed in any order. D. Adata structure that allows for hierarchical relationships between elements. 3)What is the purpose of data structures in programming? A. To organize and manage data efficiently B. To provide a way to visualize data in graphical formats C. To store data in a random manner without organization D. To execute algorithms without any data management 4)How do sets in Python handle duplicate elements? A. Sets do not allow duplicate elements B. Sets allow duplicates but ignore them during operations C. Sets automatically remove duplicates when created D. Sets can contain duplicates but will raise an error if added 5)What is a tree in the context of data structures? A. A non-linear data structure with linked nodes B. A structure that only allows two children per node C. A collection of nodes without any hierarchy D. A linear data structure with sequential elements 6)What does the append()method do in a Python list? A. The append() method sorts the items in the list B. The append() method adds an item to the end of a list C. The append() method adds multiple items to the list D. The append() method removes an item from the list 7)What are the two main components of a linked list node? A. Data element and previous node reference