Question

Original design of tensiometer was first proposed by

• A. Willard Gardner
• B. L. A. Richards
• C. B. E. Livingstom
• D. Henry Darcy

Hint:

Remember Gardner in the context of soil moisture measurement instruments.

Answer 1

The Correct Option is A

Step 1: Richards refined the tensiometer/pressure-plate method later; Livingston is linked to the atmometer; Darcy is linked to Darcy's law, not tensiometers.
Step 2: None of these three originated the tensiometer design.
Correct option: Willard Gardner.