Avariable isa. measurable trait or characteristic that is subject to change under different conditionsb. the extent to which a measure provides consistent resultsc. the unintended influence that observers or experiments can have on their subjectsd. a speculative statement about the relationship between two traits

Option (A)

Explanation:

In the discipline of mathematics, the variable is considered to be or referred to as the symbol which is used in order to represent the arbitrary factor or element of the following set. In the addition to the numbers, these variables are also commonly used in order to represent the vectors, functions and the matrices.

hi there!

moors is essentially another word for muslims.

the moors invaded spain around year 700, during their time ruling spain the muslims promoted religious tolerance (moors tolerated jews who were viewed as outcasts by northerners), the moors as well had a great impact on their language, and architecture (palaces were created).

i hope this !