The Harappan civilization, also known as the Indus Valley civilization, flourished around 3300 to 1300 BCE. It was one of the world's earliest urban civilizations, and its remains have been discovered in the modern-day countries of India and Pakistan, as well as Afghanistan and Iran. The civilization was named after the ancient city of Harappa, one of its major centers.

Let us explore the given options: '

A ladder is a piece of equipment consisting of a series of bars or steps between two upright lengths of wood, metal or rope used for climbing up or down something. 

'Steps' are flat surfaces, especially in a series, on which to place one's foot when moving from one level to another. 

'Stairs' are a set of steps leading from one floor of a building to another, typically inside the building.

 'Railing' is a fence or barrier made of rails. 

Hence, the correct answer is option 1.

All statements are true.

- CRT The monitor is the thinnest monitor.

- Dot matrix is the fastest computer.

- CAG memory is slower than the main memory.

1. Optical Mark Reading (OMR) is a method of entering data into a computer system.

2. Optical mark readers read pencil or pen marks made in pre-determined positions on paper forms as answers to questions or tick list signs.

1. Information is organized into horizontal and vertical columns using tables for easy reading.

2. In MS Excel 2010, the horizontal bar is located at the bottom right of the screen.

The comment given for a cell entry displays the following information on the screen:

1. Comment text: The comment text is written by the person who is rating the item. This text may express the person's opinion or reaction to CellEntry.

2. Comment Rating: Comment rating is a numerical value that reflects the quality of the cell entry. Ratings usually range from 1 to 5, where 1 is the lowest and 5 is the highest.

3. Comment time: Comment time is the time when the comment was written.

1. Through hyper link you can connect any location of the current document to another document or website.

2. Hypers are found in almost all web pages. Links allow users to click from one page to another.