Anyone know the answer to this algebra 2 problem? will give brainiest

This question awards 100 ! i really don’t want to fail i will also mark you !

What is the least common factor of 6 and 8

Determine the common ratio and find the next three terms of the geometric sequence. 10, 2, 0.4, a. 0.2; -0.4, -2, -10 c. 0.02; 0.08, 0.016, 0.0032 b. 0.02; -0.4, -2, -10 d. 0.2; 0.08, 0.016, 0.0032 select the best answer from the choices provided a b c d