Question 5 (10 points) It is important not to over tighten this __ a porcelain b Plastic C Glass d Metal

## Step 1<br />The problem is asking us to identify which item among the given options should not be over tightened. The options are porcelain, plastic, glass, and metal.<br /><br />## Step 2<br />We need to consider the properties of each material. Porcelain, glass, and metal are hard materials that can withstand being tightened without breaking or cracking.<br /><br />## Step 3<br />On the other hand, plastic is a softer material that can deform or break when over tightened. Therefore, it is important not to over tighten plastic.