Which drug is classified as a urinary antispasmodic?

Oxybutynin Chloride is classified as a urinary antispasmodic because it works by relaxing the bladder's muscles, which helps to reduce symptoms of urgency and frequency in patients with overactive bladder. This medication specifically targets the muscarinic receptors in the bladder, leading to decreased contractions of the bladder muscle during urination.

Other options provided do not fit this classification. Pioglitazone Hydrochloride is an antidiabetic medication that helps control blood sugar levels in type 2 diabetes and does not have a role in urinary spasms. Metoclopramide Hydrochloride functions primarily as an antiemetic and gastrointestinal motility agent, promoting gastric emptying and reducing nausea. Baclofen is a muscle relaxant used to treat spasticity caused by various conditions, but is not specific to urinary tract conditions. Thus, Oxybutynin Chloride is the most suitable choice for managing urinary spasms.