Gram is much smaller than kilogram, and a kilogram is much too big to fit in a pen cap! Your answer is grams.
The salute is often thought to date back to Roman times, but there is no evidence that soldiers raised their hand as a formal greeting. Another theory is that it originated in medieval Europe, when knights used their hands to raise their visors, revealing their identity to demonstrate they were friendly.
Answer: In transport economics, the value of time is the opportunity cost of the time that a traveler spends on his/her journey. In essence, this makes it the amount that a traveler would be willing to pay in order to save time, or the amount they would accept as compensation for lost time.
I don’t like watching TV but, I really enjoy going to the movies.
C. How to
It has to be, none of the rest fit.