The purpose of this study is to evaluate participant preference for coformulated hyaluronidase/pembrolizumab pembrolizumab (+) berahyaluronidase alfa \[MK-3475A\] administered subcutaneously (SC) over pembrolizumab \[MK-3475\] administered intravenously (IV) in participants with multiple tumor types. There will be no hypothesis testing in this study.