Ap computer science principles
when responding to a question with 4 choices, the most efficient method will require number of bits.
- 5 bits
- 4 bits
- 3 bits
- 2 bits
- 1 bit

When responding to a question with 4 choices, the most efficient method will require 2 bits.

The correct answer is 2 bits.

2 bits are also known as tetrade. these are the  the smallest unit  in a computer. A bit is the short word for a binary digit. You can respond to friends and teachers using a binary digit, this is called a binary message.