Answer:
A. Matched lumber
Explanation:
Tongue and groove siding is an example of matched lumber.
Tongue and groove siding is defined as a method which is used to fit similar objects together.
Tongue and groove siding are used in matched lumber, where the tongue-and-groove joint is made with tongue at one edge of each piece and a groove present at opposite edge and the tongue-and-groove work perfectly when end-matched.
Hence, the correct answer is "A. Matched lumber".
