What common feature of well-made web apps helps them stand out from static email advertisements?
O They help advertise product.
O You can add a chat window for support.
You can integrate images and text related to your brand.
You can reach more people.

You can add a chat window for support.

Explanation:

The answer above is a well known feature in well-made web apps and the only difference between apps and static email advertisements in the options.

Both the apps and the email advertisement work to advertise a product so option A is incorrect.

You can also integrate images and text related to your brand in both the app and email.

Both of them enable you to reach more people as well.

Option B is therefore correct.