Question

is the group of words in bold a phrase or a clause?
japans countless temples and shrines, such as the kōtoku-in temple, the meiji jingū shrine, and the sensō-ji temple, are designed with incredibly elaborate architectural details.
phrase
clause

Explanation:

A phrase lacks a subject-verb pair that expresses a complete thought. The bolded words "are designed with incredibly elaborate architectural details" contains a subject (implied "Japan's countless temples and shrines") and a verb phrase "are designed", forming a predicate that works with the main subject to express a complete grammatical unit, which makes it a clause.

Answer:

clause