They give them flowers that cause them to forget their homes. Option A is correct.
The natives in the land of the Lotus-Eaters posed a threat to Odysseus and his mem by giving them the intoxicating fruit of the lotus to eat so that they forgot about their homes. As a result, they wanted to stay there. However, Oddyseus did not eat the lotuses.
The reached that land because of a storm sent by Zeus which swept them along for nine days before taking them to the land of the Lotus-eaters.