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pressure buildup in the crankcase of a vehicle can cause
a. overheating of the catalyst converter
b. oil seals and gaskets to leak oil
c. an increase in carbon monoxide emissions
d. premature camshaft failure

Explanation:

When there is pressure buildup in the crankcase, the increased internal pressure can force oil past the seals and gaskets. Overheating of the catalyst converter is usually related to issues like misfiring or incorrect fuel - air mixture. An increase in carbon monoxide emissions is typically due to problems in the combustion process (e.g., incorrect air - fuel ratio). Premature camshaft failure is more likely caused by lack of lubrication, improper installation, or manufacturing defects rather than crankcase pressure buildup.

Answer:

B. Oil seals and gaskets to leak oil