Refer to figure 1 and figure 2.

In figure 1 you can see the effect of downwash on the effective angle of attack and therefore the induced drag of a wing profile.Now the question is asking what will happen to the induced drag coefficient and the lift coefficient when entering ground effect:

• Induced drag coefficient: Using figure 1, and knowing that when entering ground effect the downwash decreases, we know that our induced angle (α_i) will decrease, therefore decreasing the induced drag (D_I). This means a decrease in C_DI, hence statement 2 is incorrect!
• Lift coefficient: Using figure 1, and knowing that when entering ground effect, the effective angle of attack (α_e) increases because of the decreased downwash, we can see in figure 2 that an increase in effective angle of attack will increase the coefficient of lift of the wing. Therefore we can say that statement 1 is correct!