The First Amendment protects freedom of speech but allows restrictions on speech that incites imminent lawless action and is likely to produce such action. This is a narrow exception to the general protection of free speech.
A fee simple subject to a condition subsequent is a type of property interest where the grantor retains a right of entry if a specified condition is breached. If the property is used in a way that violates the condition (e.g., used for non-residential purposes), the grantor may exercise the right of entry to terminate the estate.
The Fourth Amendment protects against unreasonable searches and seizures, generally requiring a warrant supported by probable cause. However, one exception is when consent is given by someone with authority over the premises.
A condition precedent is an event or action that must occur before a party's obligation under a contract becomes effective. Option C describes a situation where a contract is contingent upon the occurrence of a specific event, fitting the definition of a condition precedent.
Hearsay is an out-of-court statement offered to prove the truth of the matter asserted. A letter from a third party used to prove the truth of its contents is hearsay and generally inadmissible unless an exception applies.