Random fact my grandpa was in world war 2
The correct answer is A. Much ... effect
Explanation
To ask questions in English you can use "how much" and "how many"; these two differ in that the first is used to ask for uncountable nouns such as air, salt, sugar, among others, while the second is used for countable such as apples, people, animals, hours, among others. Therefore, the most appropriate word to ask about the amount of salt that is healthy to eat per day is "how much". On the other hand, the word "affect" is a verb that refers to action, while "effect" is a noun that refers to the consequences of an event. So, the most appropriate is the noun because the text is wondering about the effect that salt has on health and not how it "affects" health. So the answer is A. Much ... effect.
Answer: question 1 would be on the computer as he is not inside it.
question 2 would be on as the time is on top of the watch.
question 9 would be behind as trailed means to drag behind.
question 14 would be at the gate.
question 16 would be on the beach as the waste is on top of the beach.
question 17 would be at the table as the children are not sitting on top of the table.
Explanation: