Six objects are classified into two groups as shown in the table.
The objects are grouped according to _________.
ATheir flexibility
BThe materials they are made of
CWhether they are waterproof
DNone of these
Six objects are classified into two groups as shown in the table.
The objects are grouped according to _________.
ATheir flexibility
BThe materials they are made of
CWhether they are waterproof
DNone of these