Answer:
Blind.
Explanation:
In a blind experiment, information that can affect the participant's decision after the experiment is not told or we can say blinded until the experiment is over. Good blinding can eliminate experimental biases . A blind can be imposed on any participant.So in the question we conclude that it is blind experimental design.
C. The viewing area of a web browser.
The viewport is the user's visible area of a web page.
Answer:
ENIAC: Electronic Numerical Integrator and Computer.
ABACUS: Abundant Beads, Addition and Calculation Utility System.
EDVAC: Electronic Discrete Variable Automatic Computer
EDSAC: Electronic Delay Storage Automatic Computer