The length of a chain is measured from A. centre of one handle to centre of other handle B. outside of one handle to outside of other handle C. outside of one handle to inside of other handle D. inside of one handle to inside of other handle

The correct answer is A. centre of one handle to centre of other handle.

The length of a chain is measured from the center of one handle to the center of the other handle. This is because the chain is a continuous loop, and the distance between the two centers is the longest possible distance along the chain.

Option B is incorrect because it measures the distance from the outside of one handle to the outside of the other handle. This is not the longest possible distance along the chain, as it includes the thickness of the handles.

Option C is incorrect because it measures the distance from the outside of one handle to the inside of the other handle. This is not the longest possible distance along the chain, as it includes the thickness of both handles.

Option D is incorrect because it measures the distance from the inside of one handle to the inside of the other handle. This is not the longest possible distance along the chain, as it includes the thickness of both handles.