Answer:
The word in the sentence gives the best clue to the meaning of peruse is:
Glancing
Step-by-step explanation:
The sentence starts by saying that the father of the writer perused the morning newspapers while taking coffee. Then, he continues saying "glancing" at the words. Expressing that his father observed with attention to the newspaper. Clarifying the meaning of "peruse", because at the moment we didn't know its meaning. However, declaring that he observed it with all his attention provided us the information required to know "peruse" means watch.