Jill was a worrier she worried a lot.
Answer:
D. Digital signatures
Explanation:
Of the given terms, Digital signatures is the best associated with public key infrastructure(PKI). This is because digital signature facilitate signing a document electronically by using one's private key. This signed document can then be verified by a recipient using the person's publicly available public key. If the verification is successful then it can be established that the document was indeed signed by the concerned person.
#1, Option D)filters let you filter out certain things or search for them. For example if i'm looking through a database with all the students grades. I could filter out everything that doesnt math a students name. This would only show results for what I searched for.
#2 Option C), filters make it easier to find specific information,
#3 Option A),the unwanted parts of the web are removed from sight!
#4 Option A) you must ad the sort feature first!
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