The question asks who decides a third party's claim of independent title when property of a judgment-debtor is attached in execution proceedings under the Code of Civil Procedure, 1908. Testing each option against Order XXI Rule 58 resolves this.
Since Order XXI Rule 58 places the claim squarely before the executing court itself, rather than requiring a separate suit, a wait until execution ends, or referral back to the court that passed the decree, only one option matches the rule.
Therefore, the correct answer is Shall be adjudicated by the executing court.