Using a passive voice is the most effective practice while writing. This practice emphasis the action in the sentence and accepts the absence of agency / doer. These sentences make sense of anonymity. All of these make this practice most effective in the between the given options. Using negative words, excessive repetition of certain vowels or consonant sounds and the you-attitude are considered for the effective writing.
Current day engineers and now very educated and advanced. But technology advances everyday as well so they have to keep up. There are new machines in their work that they have to use. So they have to learn to generate the machines often.
