I think I can use either "Use or employ"

English Language Tests, Intermediate level

ESL/EFL Test #100 [color=blue]“Student Teacher Dialogue (3)”, question 1

Teacher: Can you explain to me when you the Past Simple and when the Present Perfect?

(a) employ
(b) utilise
© exercise
(d) use

English Language Tests, Intermediate level

ESL/EFL Test #100 [color=blue]“Student Teacher Dialogue (3)”, answer 1

Teacher: Can you explain to me when you use the Past Simple and when the Present Perfect?

Correct answer: (d) use
[size=200]_________________________[/size]

I think I can use either “Use or employ”

I agree; we will change the answers to be less ambiguous, thank you.