the answer is A according to my knowledge.
The answer would be A. thick filaments!
Explanation:
plants need water for the process of photosynthesis and transpiration
Scientists use radio technology in order to track endangered species. These include radio collars, tags and chips. These devices can then be tracked wither via satellites through GPS technology or by locating the radio waves emitted by these devices using receivers.
These devices have proven very helpful in tracking organisms and monitoring their populations.
