What is the Best Routing 1.Default Routing 2.Static Routing 3.Dynamic Routing?

it depends on the size of network if small one static routing should be used but if big one with differant vendors the best thing is to use default routing

Make a Good Choise ..!!

Depend on your network size., Static routing for small organisation and EIGRP and OSPF

it depends on the size of network if small one static routing should be used but if big one with differant vendors the best thing is to use default routing

Based from your choices. It depends on the design and what the network is for. Default Routing is best for the Client side as they dont need to be bothered with how the network is actually connected. Static is best for servers who gives  out proper services or for admins who may require a farm more precise network config. While Dynamic Routing is best for larger network.

But all in all it depends on the configuration and the side of the network.

it depends what really you are doing and what you meant by the routing in a network mostly in small organizations where there is only 2 or 3 routers they are using static routes but mostly for ISP Providers its a mixtures of routing protocols used such BGP, OSPF EIGRP and static routers.

so if you are running a multi network with different sites then definitely dynamic routing is preferred and recommended

Depend on your network size, I'm using OSPF Routing and EIGRP Routing

We can use a routing method depending on our size of the network and what we want to do.

Static routing is good if our network is small network or static routing can be used on an edge router.

Dynamic routing such as Rip, Ospf, Eigrp can choose if your network is a medium to larg one.

I think default routing is a good option when you want to point a route to the out of your network. 

Static routing for small organisation and EIGRP and OSPF

Static routing is the best routing based on the Administrative Distance (AD) concept.

AD is the feature that routers use in order to select the best path when there are two or more different routes to the same destination from two different routing protocols. 

AD of Stating routing is lower than dynamic routing.

routers use default routing when no particular route exists.