Answer:
3. using the passive voice
Explanation:
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.
I would go with default. Dictionary and library do not really make sense in this circumstance. Default suggests a pre-selected option chosen by the database, which makes the most sense in this situation.
