Question

1. what is the independent variable in the bread - baking experiment? the type of flour used the amount of sugar added the size of the bread loaf the temperature of the oven

Explanation:

In a bread - baking experiment, the independent variable is the factor that is manipulated by the experimenter. The type of flour used is a factor that the experimenter can choose to vary, and it is expected to cause changes in the outcome of the bread - baking (like the quality, texture, etc. of the bread). The amount of sugar added could also be an independent variable, but in a typical bread - baking experiment focused on the type of flour, the type of flour is the independent variable. The size of the bread loaf is a dependent variable (it depends on other factors in the baking process), and the temperature of the oven is usually a controlled variable (kept constant to study the effect of other factors). So the independent variable here is the type of flour used.

Answer:

A. The type of flour used