B). The diary entry would have a more casual tone.
Explanation:
A diary entry is elucidated as the informal journal where an individual expresses the significant events took place in his/her life along with a blend of personal thoughts, opinions, or feelings associated to it while an article is exemplified as an objective yet a formal expression of a specific event or subject for general interest.
As per the question, a diary entry would differ in tone and expression from the given article while comparing the battery chargers. A 'diary entry would adopt a more casual and personal tone' <u>to describe them along with a touch of author's personal thoughts or feelings(through the use of more descriptive words) about these chargers which is contradictory to the formal and objective tone adopted in the article</u>('The most common complaint about rechargeable batteries is poor performance') to present a factual description for general interest. Thus, <u>option B</u> is the correct answer.
