Having trouble understanding subordinate clauses

It is DIRECT OBJECT

Explanation:

meaning of subordinate clause:

a clause, typically introduced by a conjunction, that forms part of and is dependent on a main clause (e.g. ‘when it rang’ in ‘she answered the phone when it rang’).

meaning of Italicized noun clause:

The underlined portion of the sentence contains the subject and the verb. The italicized portion is the noun clause which contains a subject and verb but is a dependent clause. The noun clause is acting as the direct object of the sentence.

what play?

explanation:

there is no play