The British Isles have experienced a long history of migration from Europe. The ancient migrations have come via two routes: along the Atlantic coast and from Germany–Scandinavia. The first settlements came in the Palaeolithic and Mesolithic periods. The earliest evidence of human presence in Ireland is dated to 10,500 BC.[1][2][3]
Research into this prehistoric settlement is controversial, with differences of opinion in many academic disciplines. There have been disputes over the sizes of the migrations and whether they were peaceful. In the latter part of the second millennium, the finds of archaeology allowed a view of the settlement pattern to be inferred from changes in artefacts. Since the 1990s the use of DNA has allowed this view to be refined.
'A' is the correct answer hope it helps.
As the ruler of the market the consumer is supposed to indirectly tell the producer what and how much of that item they are supposed to make. They do this buy buying out an item that they really like which tells the producer that they need to make more and can possibly charge more for that product since so many people want it so bad. On the other end of that, when consumers don't purchase the product that is being sold then producers will either charge less because the price they have it listed for is too high or they will take the item entirely off the market because they are not making any profit off of it.
