Adding placements to an ad group

Adding placements to an ad group

A)  negatively affects the Quality Score for search
B)  does not affect the Quality Score for search
C)  improves the Quality Score on Google
D)  improves the Quality Score for search

Answer : does not affect the Quality Score for search

Reason :

As per Wikipedia, Factors in determining Quality Score

Below is the most recent update of factors that go into your Quality Score on Google. The biggest change since the previous update has to do with how well you target the different types of devices that can be used for doing the search.

Past clickthrough rate (CTR) for certain keywords
How often a specific keyword led to clicks on a specific advert.

A display URL's past CTR
How often a specific display URL received clicks.

Account history
The overall CTR of all the ads and keywords for an account.

The quality of a landing page
How relevant, transparent, and easy-to-navigate a page is.

Keyword/ad relevance
How relevant a keyword is to the advert.

Keyword/search relevance
How relevant a keyword is to what a customer searches for.

Geographic performance
How successful your account has been in specific regions.

An advert's performance on a site
How effective an advert has been on this and similar sites in the Display Network

Targeted devices
How effective adverts have been on different types of devices, e.g. desktops/laptops, mobile devices, and tablets

Read more at https://en.wikipedia.org/wiki/Quality_Score