When siobhan witnesses a car accident she senses both the sight of it and the loud sound of it. these combine to create her perception and this is an example of?

This is an example of "multimodal perception".

Multimodal perception is the procedure by which the perceptual framework consolidates data emerging from more than one methodology. A shockingly extensive number of mind areas in the midbrain and cerebral cortex are related to multimodal perception. These areas contain neurons that react to boosts from not only one, but rather different tangible modalities.  

 The correct answer is :  multimodal perception

Explanation:  Multimodal refers to the multiple sensory modalities. Multimodal perception is the process by which the perceptual system combines information that appears in more than one modality. The senses are almost always active and the environment is responsible for putting information on all modalities.

debating and finalizing the detail of the policy

answer; regard the action of other people negatively;