Answer:
Option (C)
Step-by-step explanation:
The terrestrial plants are defined as those plants that grows in the land areas. These plants have a certain respiratory pattern during the day time. The plants takes up Carbon dioxide (CO₂) and releases Oxygen (O₂) during the day time, in the presence of sunlight, which enables it to prepare their own food. This process is known as the photosynthesis process.
These plants at night time, releases nearly half of the Carbon (C) it consumes during the day time, so these plants remain a net Carbon sink.
Hence, the correct answer is option (C).