True or false? . a placebo is a substance that elicits no response in an experimental subject.

Ans.

A placebo can be defined as a substance with no intended therapeutic responses. Examples of common placebos include inert injections (such as saline), inert tablets (such as sugar pills), and sham surgery.

It is used as a blind test, in which subjected people do not know whether they are receiving placebo or real treatment. The main purpose of placebo is to account for the effect of placebo, which is, effects from the treatment which do not depend on treatment itself.  

Thus, the given statement is true.

lunar landing mission. apollo 11 was the first manned mission to land on the moon. the first steps by humans on another planetary body were taken by neil armstrong and buzz aldrin on july 20, 1969. the astronauts also returned to earth the first samples from another planetary body.

explanation:

looks like the answer is     c     to me!