Answer:
the answer is the last one , sorry if im wrong.
Explanation:
Sedimentary, igneous and metamorphic
Single displacement (Substitution)
tert-butyl bromide
sec-butyl bromide
CH3 -CH-CH2-CH3
Br
CH3
CH3-C- Br
isopropyl bromide
CH3-CH-Br
isobutyl bromide
CH3-CH-CH2-Br