Step 1: Understand lianas / climbers.
Lianas or climbers are woody plants that use other structures to support their growth and are commonly found in dense tropical rainforests.
Step 2: Review the options.
- Taiga is a cold forest region where climbers are not typically found.
- Deciduous forests have some climbers, but they are not as common as in tropical rainforests.
- Tropical rainforests have the highest concentration of lianas due to the dense canopy and moist environment.
- Shrubs or chaparrals do not typically support woody climbers.
Step 3: Conclude.
Woody lianas and climbers are most commonly found in tropical rainforests, making option (C) the correct answer.
Final Answer:
\[
\boxed{\text{Tropical rain forest}}
\]