Answer:
his or her
Explanation:
<em>Everyone</em> is a singular indefinite pronoun so it should agree with a singular pronoun too.
the correct conjunction is "which"
A picture of her wearing the first dress she designed.
The analogy is meant to show parallels between two sets of words. Fertile is to arable as vague is to clouded. If you understand either pair it can be used to decipher the meaning of the other pair you don't know.