9. What direction should you sand your wood?

a. With the grain
b. Against the grain
c. It doesn’t matter
d. On an angle to the grain

https://www.google.com/search?source=hp&ei=qAIsW8GCC42SsAX8kqm4Cw&q=+What+direction+should+you+sand+your+wood&oq=+What+direction+should+you+sand+your+wood&gs_l=psy-ab.3..33i22i29i30k1.9196.9196.0.10809.4.2.0.0.0.0.152.152.0j1.1.0....0...1c.1.64.psy-ab..3.1.151.0...0.Kr__yy0O7dY

I know how to b ut all the answers a, b, c , d it doesn't make sense.

I suggest you read the page that I posted for you. The question is asking whether you should sand with, against, or crosswise to the grain of the wood.

is the answer with the grain

Yes.

Isn't that fact in your text materials?

To determine the correct direction to sand your wood, you need to understand the concept of grain in wood. The grain refers to the direction in which the wood fibers run. It is important to sand in the same direction as the grain, as this helps achieve a smooth and even finish.

The correct answer is a. With the grain.