I believe the answer is short
The pronoun in the sentence is 'they'.
This pronoun repleaces the words 'dogs and cats'.
For your question i think its B
Cell phone because then they would be able to watch videos text each other FaceTime use a calculator and overall have many tools in the bottom of their hand.
Hope I can help bro
Answer:
Classify because to Categorize is to put in a particular class or group and this is called Classification.
