The common element among the newspapers The Servant of India, Dayan Prakash, and Hitawad is that they were newspapers of moderate views brought out by the Servants of India Society.

Option 1 suggests that the newspapers were brought out by the Indian National Congress, which is not accurate. Option 2 suggests that they were newspapers under the influence of socialism, which is not mentioned in the question. Option 4 suggests that they represented the Trade Union Movement in India, which is not mentioned or implied.

The provided answer, option 3, correctly states that the newspapers were of moderate views. They were brought out by the Servants of India Society, which was an organization founded by Gopal Krishna Gokhale in 1905. The society aimed to promote social and political reforms in India. The newspapers mentioned in the question were a means for the society to disseminate its moderate views.