Answer:
being blind
Explanation:
Participle phrase is a set of words that functions as an adjective (modifies a noun) and its main part is a participle, past or present. The phrase usually begins with this participle.
Although they look like verbs, these participles act as adjectives and can be recognized by ending in -ing (present participles). Past participles, on the other hand, can have many different endings, depending in the regularity of the verb.
The most prominent example of a participle phrase here is "being blind". It consists of present participle of the verb to be and it modifies the noun street, thus having the function of an adjective.
P.S. If this is the multiple choice question, then the phrase "having been enclosed" could also be taken to consideration, since, in a broader sense it consists of a participle (passive perfect participle) and it modifies the noun air, so it is an adjective.
