Final answer:
The control that resizes vertically to fit its content when set to yes is the 'Can Grow' option, often used in database reporting tools to ensure all content is visible by expanding controls to accommodate larger data.
Step-by-step explanation:
When set to yes, the control that resizes vertically to fit its content is the Can Grow option. This feature is commonly used in database reports or forms within software like Microsoft Access. When the Can Grow property is set to yes, if the data contained is too large to fit in the fixed size, the control will expand vertically to accommodate the additional content, ensuring that all content is visible. Conversely, the Can Shrink property allows the control to reduce in size if there is less content than the fixed size.