Explanation:
Name the device that is Used to measure the depth of ocean or sea
What the verbs fit, set, and read have in common is that they keep the same form no matter what tense is used.
You can say - I read a book every day. Or Those pants fit you nicely. Or I set the table often.
And if you want to say all that in the past tense, it would look the same:
I read a book yesterday. Those pants fit him nicely a long time ago. I set the table two days ago.
The correct answer is b. Illegal immigration causes additonal obstacles for the immigrant: the problems that her father has with work and also her mother who cannon work herself as she hasn't obtained citizenship.