Reliability refers to how well measures capture the meaning of concepts under investigation.

you so !

answer; can each be concretely realized in different ways;

i think it's d because a "rythem" is a

1)a particular type of pattern formed by rhythm.

2)a strong, regular, repeated pattern of movement or sound.

3) the systematic arrangement of musical sounds, principally according to duration and periodic stress.

so, d mabye.