Wrap your head around (something)

Do you know the English expression “wrap your head around (something)”? Read the conversation below. Can you guess the meaning?

Polly: How are you getting on with your maths homework? Question number 5 is difficult, isn’t it?

Jake: Very difficult. I can’t wrap my head around it.

Does it mean:

a) understand something which is complicated

b) understand something which is boring

c) twist one’s head

d) understand something which is very long

The answer is below!↓

 

Answer: a) understand something which is complicated