Answer:
B.
The boy could do everything the teacher asked expect the ability to cut out the shapes.
Answer:
A quasi-experimental
Explanation:
Quasi-experimental study: In research, the term quasi-experimental study is defined as one of the research methods that encompasses an independent variable's manipulation in the absence of any random assignment associated with the participants to order of different conditions or simply conditions. In a quasi-experimental design, a control group can not be developed.
Types: Pretest-posttest, interrupted time-series, and nonequivalent groups designs.
In the question above, the given statement is an example of a quasi-experimental study.
Answer:
periodic table is a table of element, arranged in a increasing order of relative mass.
it was invented by Mendeleev in the year 1869, 17 th Feb.