Write a c++ program to compute the product of two matrices. you are required to use the template class vector to represent a matrix. (see matrix. cpp on the main course page, which is an example of how to create and initialize a 2d-matrix using vectors.) specifically, your program will include the main( ) function and a second function multiply_matrices( ). the main() function will

allow the end-users to provide the dimensionality of the two matrices a and b, and subsequently the content of a and b

call the multiply_matrices() function to compute the product of a and b

print out the multiplication result

Choose the best explanation for the following statement communication is symbolic

1. ask the user how many questions are in the quiz. 2. ask the user to enter the key (that is, the correct answers). there should be one answer for each question in the quiz, and each answer should be an integer. e.g., 34 7 13 100 81 3 9 10 321 12 might be the key for a 10-question quiz. you will need to store the key in an array. 3. ask the user to enter the answers for the quiz to be graded. there needs to be one answer for each question. note that these answers do not need to be stored; each answer can simply be compared to the key as it is entered. 4. when the user has entered all of the answers to be graded, print the number correct and the percent correct. 5. add a loop so that the user can grade any number of quizzes with a single key. after the results have been printed for each quiz, ask "grade another quiz? (y/n)." note: you only have one array (the key). you are not creating a new key for each set of quiz answers.

Which explains extrinsic motivation? a)motivation in which there is a reward b)motivation that is personally satisfying c)motivation that is personally meaningful d)motivation in which the subject is interesting