Apex 1 is road, not mountain, but yes, it should work. Both Red 10 and Apex 1x11 are Exact Actuation. You just can't mix them with the X-Actuation 11 and 12 speed mountain stuff.
Just confirming with BluesDawg, the parts are compatible. The Marin Lombard actually ships with a SRAM Apex shifter and X7 or GX derailleur with the wide range 11-36 cassette.
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