Students in primary classes have a lot of alternate competitions many topics like living

Students in primary classes have a lot of alternate competitions many topics like living, water cycle, plants, etc. The sources of these alternate conceptions can be
A. family and community
B. textbooks and other books
C. teachers
D. stories and poems
select the correct option.
(a) A, B and D
(b) A, B, C and D
(c) Only A
(d) A and B