Multi-select problem: How does the next paragraph end?

How to measure soil moisture
Stick your finger 1-2 inches (2.5-5.1 cm) into the soil.
If you're just trying to get a general idea of how dry or moist your soil is, simply take a good look at it. If it's a light color, such as tan, and/or is hard and compacted together, then your soil is most likely on the drier side.

Choices:
a). It's always best to add a soil sample before you begin any type of soil testing. Purchase test strips or a measuring tape to get a precise measurement..
b). This may mean that you need to water your soil more. Keep in mind that some soil naturally looks lighter, despite the amount of moisture in it..
c). If it's slightly yellowish in shade, which indicates dampness, then your soil is probably dry. The same is true for black soil, which indicates dry..
d). Wiggle your finger back and forth. Next, turn your finger slowly from side to side in small circular movements..
b).