The recognition-by-components theory of object perception proposed that recognition of objects is based on basic units of shapes and objects. what does this theory fail to explain?

a. processes involved in grouping objects
b. non-accidental properties
c. principle of componential recovery
d. discriminability of geons

a) Processes involved in grouping objects

Explanation:

In basic terms, the Recognition-by-Component (RBC ) theory states that to recognize an objects  we break it down into simple shapes (also known as geons) like cylinders, spheres or cubes. Our recognition of the object is based on the iterations of these basic shapes.

The weakness of the RBC theory is that it does not provide a mechanism for the reduction of real life items into geons. It also does not explain how we can differentiate between two similar real life objects like an apple and an orange where are both basically spheres.

the answer is b, have negligible mass

not too sure thinking all accelerations are pointed down