Final answer:
The traditional pattern used in a Filipino house is the Bahay Kubo, a dwelling known for its simple, organic materials and design suitable for the tropical environment.
Step-by-step explanation:
The pattern used in a traditional Filipino house is A) Bahay Kubo. This term refers to the indigenous Filipino dwelling characterized by its simple rectangular or square floor plan and made typically of organic materials like bamboo and nipa palm (for the thatch roofing). These structures are designed to be resilient in tropical climates, elevated on posts to prevent flood damages, allow air circulation, and protect against pests.