The statement that is reasonable with regards to identifying which arrangements are within the scope of IFRS 15 is:
Tai buys a motor vehicle from Electrify Ltd. Electrify Ltd. includes a repurchasing clause. Depending on the specific type of repurchase agreement, and more specifically whether Tai obtains control of the motor vehicle or not, the purchase agreement may or may not be within the scope of IFRS 15.
This statement is correct because the application of IFRS 15 depends on whether Tai gains control over the motor vehicle. If the repurchase agreement is such that Tai effectively controls the vehicle, then the transaction could be considered a lease agreement and thus outside the scope of IFRS 15. However, if Tai does not gain control, the agreement might be considered a financing arrangement with a right-of-use asset, and IFRS 15 would apply to the extent that there's a sale of goods or services.
The other statements provided are not entirely accurate: - High Rise Inc.'s costs to obtain and fulfill a contract are not necessarily irrelevant to IFRS 15 just because the standard focuses on revenue from contracts with customers. While the costs themselves might be accounted for under other standards, the assessment of whether they are incremental and directly related to obtaining the contract, which impacts the revenue recognized under IFRS 15, is still relevant. - The sale of the laptops by Electrify Ltd. to the underprivileged school might not be a typical customer-supplier relationship, but if there was an agreement with specific terms and conditions, it could still fall under the scope of IFRS 15, especially if Electrify Ltd. provided additional services or guarantees as part of the transaction.
Lastly, Creative Cooking Ltd.'s contract that includes components within and outside the scope of IFRS 16 and IFRS 15 requires the application of both standards. Per IFRS 15, the entity would need to identify and measure the revenue-related components first, followed by applying IFRS 16 to the lease components.