Based on the factors of the previous pair Horace thought about when deciding on the new shoe, this is an internal search for information.
Horace is thinking about how well the last shoes he bought were suited for him and then using this to decide on a new shoe.
He is therefore using the memory he has of shoes to guide his decision. In conclusion, this is an internal search.
Find out more on making purchase decisions at https://brainly.com/question/2996111.