One yard in SI units is equal
A) 1.9144 meter
B) 0.9144 meter
C) 0.09144 kilometer
D) 1.0936 Kilometer

Hint: The S.I unit of length is meter. Yard is a non metric measurement, which is mainly used in the English units, and United States customary units. A yard is equal to three feet or thirty six inches. Using this, we can find out how many meters are equal to one yard.

Complete answer:
A yard is a fundamental unit of length in both the British Imperial System and the US Customary System equal, and is equal to 3 feet, or 36 inches.
We have,
1 yard = 36 inches = 3 feet
Then,
1 yard = 0.9144 meter

Therefore, the answer is option B.

Additional information:
The unit yard was initially recognized as the basic unit of length in the United States for customs purposes. It was defined as the distance between the 27th and 63rd inches on a brass bar. All other units in the English imperial system, such as the inch, foot, rod, and mile, are derived from it. For a long time the yard was measured equal to 3600/3937 of a meter; it has been recalculated so that 1 yard equals 0.9144 m.

Note:
There are several systems of units based on the metric system. The meter is unit of length in the metric system, and also the base unit of length in the international system of units (SI). A base unit of length meter is used to derive the other units such as Newton for force.