I'm pretty sure that it's D. In addition
This is a compound sentence in which the two independent phrases are joined by the conjunction 'and'.
The prepositions used in the sentence are;
A preposition is a word that is used before a noun, or pronoun to indicate the relationship between objects, to introduce objects, and to state the time, place, and direction of something.
In the sentence above, three prepositions are used. They are;
"Through"- this shows the relationship between brainpower and alternative ideas.
"At" points to a direction while "In" introduces an object.
Summarily, the three prepositions used are through, in, and at.
Learn more about prepositions here:
brainly.com/question/21773810
Tectonic plates. tectonic plates are evat every land mass sits on and it is how volcanoes and trenches are formed
