Researchers need to consider when measuring memory.
a. ecological validity
b. innate ability
c. senescence
d. researchers need consider none of these.

Ecological validity

Explanation:

Validity is a very important phenomenon in statistics to measure a test. Ecological validity is one of the criteria among other validates. Ecological validity is being used to measure to ask the question. It can also define if you conduct your study out of the settings, Does it measure the same thing out of the setting. It is also called a specific external validity.

External validity is that generalize its results at all populations, time, place, etc. It is of limited validity. It is generalized for today in society. Ecological validity is used to measure the memory of a person. Thus the researcher needs to consider the ecological validity to measure the memory.  

answer; ///any two strangers are likely to share many coincidental similarities;

answer; the intervening variable;