A- 1.11l
b - 2.12 l
c- 4.24 l
d - 6.36 l

rain is the best answer

hello

answer: collecting information/data

reason: the student is going around and asking people questions to collect data

i hope this

1. b.

2. d.

3. a.

5. d.

6. c.

these are the only ones that i know, i hope this , and good luck.