2. Fan-Out Wire

How do you plan to solve it?

Here the given condition is said to be "Fan Out " where all the outputs are tied to the same input driver so match the outputs to a given input 

module top_module(input a,output y1,output y2,output y3);
    assign y1 = a;
    assign y2 = a;
    assign y3 = a;
endmodule