Write the derived S.I unit of force-
A. Newton
B. Pascal
C. Mass
D. Dyne

- Hint: To solve this question, we need to know the basics related to unit and measurements and as mentioned in this question, we have to mainly focus on the S.I unit of force. As we know S.I unit means International System of Units and it is the set of physical units agreed upon by international convention.

Complete step-by-step solution:
The modern form of the metric system is The International System of Units. The International System is the only system of measurement with an official status in nearly every country in the world International System starting with seven base units.
Second (second is the unit of time with the symbol s), meter (measuring length, m), kilogram (measuring mass and kg), ampere (measuring electric current, A), kelvin (measure thermodynamic temperature, K), mole (mole is a amount of substance, mol), and candela (measuring luminous intensity, cd).

International system of units allows for an unlimited number of additional units, called derived units.

Additional Information:
Newton was a physicist, theologian, astronomer and author. And he is widely recognized as one of the most influential scientists in physics of all time.
Famous French mathematician named Pascal and he is a great physicist, inventor, writer and Catholic theologian. Pascal started some pioneering work on calculating machines in 1642, while still a teenager, he built 20 finished machines After three years of effort and 50 prototypes. He was an important mathematician.
As a CGS unit of force in 1873 by a Committee of the British Association for the Advancement of Science The term dyne was first proposed. C.G.S means standard centimeter-gram-second the standard centimeter-gram-second unit of force.
Therefore, overall, we conclude that the S.I unit of force is Newton.

Thus, option (A) is the correct answer.

Note: We also need to understand the relation between the two units of force. But globally, many prefer to use a single system called SI unit for measuring force. The SI unit recognized for measurement of force is Newton. Newton and Dyne have a relationship, which is very crucial in solving problems.
1 newton = ${10^5}$ dyne
1 dyne = ${10^{ - 5}}$ newton