Question

Which sentences are compound-complex sentences? Check all that apply. Your brain produces more dopamine when it is engaged in solving a puzzle. Our brains produce a chemical known as dopamine that is involved in learning and in creating memories. We can put together a puzzle that has challenging shapes, or we can try to solve the sudoku in the newspaper. Working on puzzles increases our concentration and can expand our creativity; puzzle-making even has health benefits. Students can improve their performance when they are faced with a challenging task, but they will have to start doing jigsaw puzzles.

Answer 1

Answer:

We can put together a puzzle that has challenging shapes, or we can try to solve the sudoku in the newspaper.

Students can improve their performance when they are faced with a challenging task, but they will have to start doing jigsaw puzzles.

Explanation:

A compound-complex sentence brings both of these sentence forms together. That is, it contains at least two independent clauses (like a compound sentence) and at least one dependent clause (like a complex sentence).

The sentence "We can put together a puzzle that has challenging shapes, or we can try to solve the sudoku in the newspaper" contains two independent clauses and one dependent clause (that has challenging shapes), the independent clauses being We can put together a puzzle  and  we can try to solve the sudoku in the newspaper.

The sentence "Students can improve their performance when they are faced with a challenging task, but they will have to start doing jigsaw puzzles" contains two independent clauses and one dependent clause (when they are faced with a challenging task), the independent clauses being Students can improve their performance and they will have to start doing jigsaw puzzles.

Answer 2

Answer:

We can put together a puzzle that has challenging shapes, or we can try to solve the sudoku in the newspaper.

Students can improve their performance when they are faced with a challenging task, but they will have to start doing jigsaw puzzles.

Explanation:

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