निम्नलिखित सामाजिक सुधारकों में से किसे पूर्व और पश्चिम के बीच 'सेतु' या समन्वयक का प्रतिनिधि माना जाता है?

Raja Ram Mohan Roy is also known as the Father of Indian ______________.

In consultation with which of the following social reformers did Maharishi Dayanand Saraswati start using the language of the common people (Hindi) instead of Sanskrit in his lectures?