Answer:
Behavioural targeting
Explanation:
Behavioural targeting is the method that enables advertisers to display more relevant ads based on user's search and browsing history. This is an online targeting technique that collects information from a particular user. This information comes from the person's browsing history. The information that comes from the browsing history enable advertisers to display specific targeted ads that would most appeal to the person in question.
Answer: str[0].toUpperCase();
Explanation:
str[0] is pointing to the first character of the entire string and the code str[0].toUpperCase() will convert the characters to upper case if they are in lowercase and will remain unchanged if they are already in upper case.
Asyncronous is the answer I think
