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We perform a spectroscopic survey of the foreground population in Orion Awith MMT/Hectospec. We use these data, along with archival spectroscopic dataand photometric data, to derive spectral types, extinction values, and massesfor 691 stars. Using the Spitzer Space Telescope data, we characterize the diskproperties of these sources. We identify 37 new transition disk (TD) objects,one globally depleted disk candidate, and 7 probable young debris disks. Wediscover an object with a mass less than 0.018-0.030 M$_{\odot}$, which harborsa flaring disk. Using the H$\alpha$ emission line, we characterize theaccretion activity of the sources with disks, and confirm that fraction ofaccreting TDs is lower than that of optically thick disks (46$\pm$7% versus73$\pm$9%, respectively). Using kinematic data from the Sloan Digital SkySurvey and APOGEE INfrared Spectroscopy of Young Nebulous Clusters program(IN-SYNC), we confirm that the foreground population shows similar kinematicsto their local molecular clouds and other young stars in the same regions.Using the isochronal ages, we find that the foreground population has a medianage around 1-2 Myr, which is similar to the one of other young stars in OrionA. Therefore, our results argue against the presence of a large and oldforeground cluster in front of Orion A.

NGC 1980 is not a foreground population of Orion: Spectroscopic survey of young stars with low extinction in Orion A