Final answer:
The correct answer is option 4) All of these are procedures in computing deferred income taxes.
Step-by-step explanation:
The correct answer is option 4) All of these are procedures in computing deferred income taxes.
When calculating deferred income taxes, all of the procedures mentioned - identifying existing temporary differences, measuring deferred tax liabilities for taxable temporary differences, and measuring deferred tax assets for deductible temporary differences and operating loss carrybacks - are essential steps.
Option 4) states that all of these procedures are involved in computing deferred income taxes, making it the correct answer.