The correct option is A 1829
Royal assent to the Metropolitan Police Act 1829 was given and the Metropolitan Police Service was established on September 29, 1829 in London as the first modern and professional police force in the world. Hence, Option A is correct. In 1839, the world's first commercial electric telegraph line came into operation. 1849 marks the advent of Pre-Raphaelite brotherhood in art, in 1859, a solar flare is observed for the first time, hence, these options are incorrect.