Answer:
The figurative expression is a Metaphor.
Step-by-step explanation:
Metaphor is a figure of speech in which a direct comparison is made between two objects or ideas unrelated to suggest a likeness or analogy between them. examples of Metaphor are; he is a shining star, he is a lion in the field, her hair is a flowing golden river, it is raining cat and dog etc.
From the phrase, '' His son too was buried in the magazine he was reading" does not mean he was literally inside the magazine. it only means he was engrossed reading the magazine.