What is the quickest and best was to get from Gare Du Nord station to La Defence station?

Question

Please give bus routes

and underground routes

Answer 1

The fastest route is to take the RER D marked "Direction : Melun" to the to : Chatelet-Les Halles  stop and transfer to the RER A marked " Direction : Saint-Germain-en-Laye"

The Bus route is far slower and requires taking the #43 Bus changing to the # 32 bus and then changing to the # 73 bus.