Answer:
The correct answers are c. can contain special characters d. is case-sensitive
Explanation:
Variable can be referred to as a container used for storing values such as numeric values, memory addresses, characters, character string so it can be used in any part of the program. Every programming language has rules that you must strictly follow while naming a variable, and some of the rules for naming variable in PHP are A variable name can contain letters, numbers, and characters after the first character and A variable name is case sensitive.
The choices are a) credible website B)search log c) Boolean operator d) online database.
The answer is, d. Online database. There are already numerous online digital tools that can aid research. Examples are readcube, mendeley, google scholar. It helps you save and organize researches as well as automatically give bibliographies according to your need like APA and MLA. These tools can hold and save different information that researchers need.
<span>A pearl is not a mineral because it is created artificially. It is a gemstone, not a mineral because it is a composite of mineral Aragonite and a protein compound which is called conchiolin. Pearls are formed by organic and living organisms which is preserved to become a gemstone.</span>
Review
(I was suprised too)
It is called the Network Server.
Hope this helps you. :)
