High temperatures denature proteins by disrupting their hydrogen
bonds. how might this affect the ability of an enzyme to catalyze
reactions?

Enzymes can be described as proteins which are used to speed up a reaction.

A certain increase in temperature increases the catalytic activity for an enzyme.

But beyond a certain temperature, an enzyme will become denatured and it will no longer be able to catalyze the reaction. The active site of the enzyme will get changed and it will no longer allow a particular substrate to fit into it.

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.