The phrase "able to apprehend it" is correct and usable in written English.
You can use it when discussing someone's capacity to understand or grasp a concept or idea.
Example: "Despite the complexity of the theory, she was able to apprehend it after several explanations."
Alternatives: "capable of understanding it" or "able to grasp it."
But Federal authorities said yesterday they had no idea where he was, had not been able to apprehend him since the bombing conpiracy indictment was issued in Detroit last Thursday and had asked United States Commissioner Earle N. Bishopp for the warrant yesterday.
The Kenyan authorities may be able to apprehend him, but plenty of jihadist volunteers have used the porous Kenya-Somali border to slip through the net and join al-Shabab.
Blackwood said the suspect tried to commit "suicide by cop," but police were able to apprehend him without incident.
Joshua Shaun Goodman, 42, was arrested last December after driving 100 mph through downtown Olympia, where he crashed into two cars and a house before police were able to apprehend him with their guns drawn, KOMO News reported.
The police were able to apprehend him because he didn't want to risk running through the traffic moving quickly in both directions he was afraid of getting hit by a car.12 This certainly gives lie to the belief that if someone is going to take his or her life there is no stopping them.
By this 'bracketing' of the natural world, by reducing the scope of one's assertions first to the subjective sphere of consciousness, then to its abstract (or 'ideal') atemporal structure, one is able to apprehend what consciousness and its various forms essentially are, in a way that supplies a foundation to the philosophical study of knowledge, meaning and value.
We believe it's because they are able to apprehend problems with greater breadth, simultaneously linking intuitive and subjective ways of feeling, with objective and communicable ways of knowing.
"I don't have the numbers -- I remember taking notes, but if I remember correctly, it was 25,000 that they were able to apprehend, other than Mexicans," Mercer said in an interview with the conservative website Western Free Press.
