I'm currently writing my thesis and checking my grammar with Grammarly software. English isn't my first language and I'm always getting a warning saying the sentence is written in the passive voice and it asks me to change it. I'm having difficulty understanding what went wrong and very much hope that you will be kind enough to let me know the reason.
Thank you, Kind regards, Navoda.
It states that the unit cost for manufacturing a product remains fixed with the increase of the production volume when Manual Labor is used as the production method. If Hard Automation is used, the unit cost gets lower than both Soft Automation and Manual Labor with the increase of the production volume, while it gives the highest unit cost among the three methods for a small production volume.