The first lawn mower was invented in 1830. The answer to this question is option 'A'.

Here is a detailed explanation of the invention of the first lawn mower:

Early History of Lawn Mowing:
- Before the invention of lawn mowers, lawns were typically maintained by manual labor, using scythes or shears to cut the grass.
- This process was time-consuming and labor-intensive, making it impractical for larger lawns or estates.

The First Lawn Mower:
- The first lawn mower was invented by Edwin Budding, an engineer from Stroud, Gloucestershire, England, in 1830.
- Budding was inspired by the cutting mechanism of cloth-shearing machines used in the textile industry.
- He designed a machine with a cylindrical cutting blade that rotated as it was pushed along the ground, cutting the grass evenly.
- Budding's invention was granted a patent on August 31, 1830, and he began manufacturing the lawn mower soon after.
- The initial design of the lawn mower resembled a manual pushcart with a cutting blade attached to the front.

Impact and Evolution:
- The invention of the lawn mower revolutionized lawn maintenance, making it much easier and more efficient.
- The machine allowed for the creation of well-manicured lawns and became popular among the upper class who had large estates.
- Over time, lawn mowers evolved and improved, incorporating features such as better cutting blades, adjustable cutting heights, and self-propulsion.
- By the mid-19th century, lawn mowers were being manufactured and sold commercially in various countries.

Conclusion:
In conclusion, the first lawn mower was invented in 1830 by Edwin Budding. His innovative design revolutionized lawn maintenance, making it more accessible and efficient. Since then, lawn mowers have undergone significant advancements, leading to the modern machines we use today.