The metal, teardrop-shaped object sometimes used within an eyesplice is a __________.

Correct Answer: Option B — thimble

A thimble is a grooved metal fitting inserted into the eye of a splice to protect the line from abrasion and excessive bending stress. By maintaining the natural radius of the line, the thimble prevents the eye from collapsing under load, significantly extending the service life of the mooring line.