This right answer is :
Keyword Planner can do all of these things but not offer Quality Score estimates and validate keywords. For explanation let us discuss in detail
Keyword – Keyword is the main part of promotion and SEO basics to promote the products and website. It also can be used in increasing the ranking in Google which also helps in increasing the viewers. If you want to increase the ranking website and products in Google then use keywords which are different and unique in content. It also helps in increasing the viewers for the website. Thus keywords play an important role in promoting the website of the company.