Answer:
The effect of the word "marched" in this excerpt is that it adds a confident tone to the way Louisa walks to her sister's room.
When we think of someone marching, we usually associate it with a purposeful and determined stride. Louisa is described as "marching" toward her sister's room, indicating that she is walking with confidence and resolve. This suggests that she is certain and determined to find the missing pencil in her sister's room.
The word "marched" implies that Louisa is not hesitant or unsure in her actions, but rather she is taking deliberate steps to address the distraction. It conveys a sense of determination and confidence in her ability to find a solution to the problem at hand.
Step-by-step explanation: