In a single subject research, a group of observations at the same individual under the same conditions is a(

Phase

Explanation:

A phase of a single subject research has a single set of environmental factors. These factors are constant in one phase.

The environmental factor is considered the independent variable which is plotted in the x axis.

The response of the subject is considered the dependent variable which is plotted in the y axis. This gives us the relation of the dependent and independent variable of the subject.

to be honest as much as i would love to answer this. i feel as if something's missing. just saying.

c. 7/3

step-by-step explanation:

a rational number is like pi- it is a repeating decimal.

a. is -1.8

b. 2.236068

c. 2.3333333333333333333

d.   is 3

i hope that ! =)