Question

what ingredient do you need to add more of to turn a batter into a soft dough? eggs flour milk/water sugar

Explanation:

Batter is a liquid - like mixture (higher proportion of liquid ingredients like milk/water compared to dry ingredients). Soft dough is more solid. Flour is a dry ingredient. Adding more flour to a batter (which already has some flour but more liquid) will thicken it. Eggs add moisture and richness but not the thickening property needed here. Milk/water are liquid ingredients, adding more would make it more like batter. Sugar is a sweetener and does not thicken in the way needed to turn batter to soft dough.

Answer:

Flour