The correct answers are A) trade and D) manorialism.
The factors influencing why towns began to grow in Medieval England were trade and manorialism.
Trade represented an important activity for England in the Middle Ages. Towns started to trade their crash crops and other goods, making the economy to produce some benefits for the people. The other factor that influenced the growth of towns was manorialism. This term refers to the organization of rural economies under a Lord who was the owner of a portion of land and people that worked for him. He usually was a wealthy man that had peasants that paid tribute to the Lord.