What kind of adapter do I need to connect this external monitor? I have a MacBook Pro 2017.  I would like to connect an external monitor, an Asus MZ27AQ Designo 27” Monitor WQHD IPS DP HDMI Eye Care Monitor, but I'm unclear how or if this is possible.  What kind of adapter would I need to connect this type of monitor?
If you register your Mac with iCloud / AppleID and then use the iOS Apple Store app - it shows compatible adapters. Two I know that work well are the Apple USB-C Digital AV Multiport Adapter adapter and another is the Belkin USB-C to HDMI Adapter

https://store.apple.com/xc/product/MUF82AM/A
https://store.apple.com/xc/product/HKQ22ZM/A

Monoprice also has great value and quality adapters in general, but I’ve not tested these specific ones yet.