* Understanding the Count Tool Alert: * In AutoCAD, the Count tool is used to quantify the number of block instances within a drawing. * A yellow error alert triangle next to the block count indicates an inconsistency or issue with the blocks in the drawing. * Common Reasons for Alert: * The block is on the wrong layer. * The block is exploded. * The block does not have its color assigned to BYLAYER. * The block has a different scale factor. * Identifying the Issue: * Option A: The block being on the wrong layer does not typically trigger a count alert. * Option C: The color assignment to BYLAYER does not affect the block count. * Option D: Different scale factors usually do not trigger a count alert unless the block definition is altered. * Option B: Exploded blocks result in losing the block definition, causing AutoCAD to alert the user of incomplete blocks, which matches the scenario depicted in the exhibit. * Conclusion: * The alert is due to the block being exploded, resulting in a mismatch between the expected block * count and the actual block instances recognized by AutoCAD. References: * AutoCAD Help Documentation on Block Counting and Alerts. * User manuals and community forums discussing common issues with block counts.