If a school keeps two lists, one for student registration and one for student financial information, both containing name and address information, this is an example of data

Redundancy

Explanation:

  The data redundancy is one of the type of condition in the database where we can easily store our data or information in more than two different places in the computer system memory. It is basically helps in correcting and also detecting the different types of errors in the stored data.

According to the given question, the school is basically keeping the two different list but the address and the name of the student information are similar and this is refers as data redundancy.  

 Therefore, Redundancy us the correct answer.

a) both were commissioned explorers

answer; /// the use of a bank credit card to make purchase;