Elena finds it very difficult to remember a long string of numbers, so she tries to memorize three numbers at a time. later, she is able to repeat the numbers correctly because she grouped the numbers into more manageable groups of three. this is an example of .chunkingb. elaborative rehearsalc. blockingd. engramming

a) chunking

Explanation:

Chunking is a process of taking individual pieces of information (chunks) and separating them into larger units. By making a group out of each piece of information into a group, a person can improve the amount of information and remember them easily.

By separating individual elements into larger groups, information becomes easier to recall. This is because of the fact that our short-term memory is very limited.

its "give abdominal thrusts" that way you can dislodge the object in the persons throat.

c. flammable gases, patient lying in standing water, combustible liquids near the victim