Question

An important key to good observational records is

A. the use of language.
B. their length.
C. the activity of the subject.
D. appropriate format.

Answer 1

An important key to good observational records is the use of language.

Answer 2

The answer for this question is letter D. appropriate format. Fair enough, the activity of the subject is equally important. However, if it is organized in a very non-systematic way that the reader of it cannot easily comprehend, then it is useless.