Using the data below, which gruop of materials can be used to prevent oneself from drowing?

1
materials that absorb water
•cloth
•sponge
•rug
•cotton ball
•tissue paper

2
materials that float

•bamboo
•log
•plastic bottle
•rubber ball
•ballon

3
materials that sink
•rocks
•metal bar
•hollow blocks
•coins
•cellphone

A.1,2 & 3
B.1 only
C.2 only
D.3 only

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