When several people are contributing to the final document,
is a feature that is very .
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track changes
highlighter

Track changes.

Explanation:

Track changes is a build in feature of Microsoft word. It help multiple user to work on single document at one time or real time. Colour cordination in it. is a wonderful feature, as it help in avoiding confusion, as multiple user may assign themself different colour. It also has a feature of highlighting, adding comment, it help to review document and shows that which part is formatted or not. We can also accept or reject changes made while reviewing the documents. It has many other exciting feature, which eliminate the double work and get us quality document with least effort. It is very helpful for office project or academic projects.

a progressive tax is a tax that imposes a lower tax rate on low-income earners compared to those with a higher income, making it based on the taxpayer's ability to pay. that means it takes a bigger percentage from high income earners than it does from low income people.

(75years ,i believe is the correct answer.good luck