Kayla is the girl who will teach you how to swim.
the girl who will
kayla is
who will teach you how to swim
who will
to swim

    bbv  b bv

  i think you forgot to put the options but if your reffering to this question then your answer will be "b"  a. add "to" to the base form to create an adjective.b. when the subject of a sentence is singular, add "–s" to the base form.c. add "–ed" to irregular base forms to form the past participle.d. do not use a base form with plural subjects