Janet's science teacher assigns Janet and her classmates the task of conducting an investigation that shows how the mass of an object affects its speed. They are provided
with a small cart and objects with different masses that they can put inside the cart.
Which investigation design would be the best choice for the assignment?

well first you need the sample of the temperature and gas level. i couldnt write a hypothesis unless i had some data. i think temperature changes will effect volumes of gas because gas changed into a solid or liquid at specific temperatures.

the correct answer is option d.

an appositive is a noun, noun phrase or noun clause which follows another noun or noun phrase in order to describe it or name it another way. they are usually used between commas, brackets or dashes.

the example sentence with the correct use of commas is the following:

her uncle, the man over there in the red shirt, owns the hardware store in town.