Which revision best corrects the underlined sentence?

Scientists have studied the benefits of hobbies. Having a pastime reduces stress.
Scientists have studied the benefits of hobbies, having a pastime reduces stress.
Scientists have studied the benefits of hobbies, but having a pastime reduces stress.
Scientists have studied the benefits of hobbies; however, having a pastime reduces stress.

Select the rebuttal statement that best refutes the viewpoint in section one. a) it is necessary to oversee the athletes involved in mixed martial arts. b) it is unnecessary to oversee the athletes involved in mixed martial arts. c) it is necessary for athletes involved in mixed martial arts to self-regulate. d) one distinctive feature of mixed martial arts is the combination of various techniques.

Who thin the context of this excerpt from act 2, scene 1, of macbeth, what is the meaning of the word multitudinous?

What’s the answer. i need the answer fast