I would say B because you shouldn't rush through your speech, time it accordingly and maybe make time for questions.
So that it is relative in comparison to other scientists for example, if people in the us used Canadian money, Mexican money, and Australian money, it would be hard to keep track of how much it was worth in comparison to each other bc the Australian money can be worth more/less so it's easier to stick with 1 form
Answer:
I have locked the door now
Mary is opening the window
Fred and Ben are eating sandwich
You are laughing at me
Mr Smith is wearing a blue shirt
Ben have payed $20 for the lunch
The answer is D. Is difficult for many to understand because there are cultural backgrounds where people are taught different ways to say the term.
It's difficult to read the multiple choices from the picture you provided but I can provide the definition of the word deductive if that helps.
