Hi,<br/><br/>1. A young boy vivacious and inquisitive.<br/><br/>2. A young boy; vivacious and inquisitive.<br/><br/>3. A young boy, vivacious and inquisitive.<br/><br/>4. A young boy who is vivacious and inquisitive.<br/><br/>Are these sentences grammatically correct?<br/><br/>My regards,<br/><br/>IMT