No one who works at Leila's Electronics has received both a poor performance evaluation and a raise. ██████ ███ ███ ████████ █ ██████ ██ ██ ████ ██ ████ ██ ███ ████████ █ ████ ███████████ ███████████
The argument starts by describing a characteristic of a group (if you work at Leila’s Electronics, it’s not possible that you’ve received both a poor performance evaluation and a raise) and then describes characteristics of an individual in that group (Lester hasn’t received a raise so he must have received a poor performance evaluation).
The argument errs because it’s possible that Lester has received neither a raise nor a poor performance evaluation. The argument acts as if because Lester hasn’t received a raise, we can infer that he has received a poor performance evaluation. However, according to the premises, it’s just not possible that an employee of Leila’s Electronics has received both a poor performance evaluation and a raise.
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