This technique gathers self-reported attitudes or behaviors of people by questioning them randomly and representatively. a) surveyb) naturalistic observationc) case studyd) exploratory study

(C) case study

Explanation:

CASE STUDY IS STUDY METHOD WHICH IS SEEN IN LIFE SCIENCE AND SOCIAL LIFE SCIENCE. CASE STUDY IS  TO EXAMINE A PERSON, A GROUP OF PEOPLE, A UNIT OF PEOPLE AND GENERLISE THAT STUDY OVER SEVERAL UNIT OF PEOPLE. CASE STUDY CONDUCTED FACE TO FACE WITH THE COMMUNITY PEOPLE, A GROUP OF PEOPLE AND GENERALIZE THE STUDY. RESEARCHER DESCRIBE THE CASE STUDY PHENOMENON WORK FOR A COMPLEX PHENOMENON AND HELP IN UNDERSTANDING IN  PROBLEM.

a. the moon was locked into orbit by the earths gravity as it was passing by and capture hypothesis i think