Final answer:
Joint cracking is often caused by excessively fast drying of joint compounds, which leads to shrinkage and cracks due to insufficient hydration.
Step-by-step explanation:
The correct answer to the question is C. Joint cracking. Joint cracking is often caused by excessively fast drying of joint compounds, which can lead to shrinkage and as a result, the formation of cracks.
During the drying process, it is important to allow joint compounds enough time to dry thoroughly and evenly to avoid this common issue. If the drying process is rushed, perhaps due to high temperatures or low humidity, the premature evaporation of water from the compounds can lead to insufficient hydration of the drywall compound, causing it to become brittle and crack.