Fla. Std. Jury Instr. (Civ.) 405.9

Next, you must decide whether the statement was a legal cause of [loss] [injury] [or] [damages] to (claimant).

a. Legal cause generally:

A [statement] [publication] is a legal cause of [loss] [injury] [or] [damage] if it directly and in natural and continuous sequence produces or contributes substantially to producing such [loss] [injury] [or] [damage], so that it can reasonably be said that, but for the [statement] [publication], the [loss] [injury] [or] [damage] would not have occurred.

b. Concurring cause:

In order to be regarded as a legal cause of [loss] [injury] [or] [damage] a [statement] [publication] need not be the only cause. A [statement] [publication] may be a legal cause of [loss] [injury] [or] [damage] even though it operates in combination with [the act of another] [some natural cause] [or] [some other cause] if the [statement] [publication] contributes substantially to producing such [loss] [injury] [or] [damage].

c. Intervening cause:

Do not use the bracketed first sentence if this instruction is preceded by the instruction on concurring cause.*

*[In order to be regarded as a legal cause of [loss] [injury] [or] [damage], [a statement] [publication] need not be its only cause.] A [statement] [publication] may also be a legal cause of [loss] [injury] [or] [damage] even though it operates in combination with [the act of another] [some natural cause] [or] [some other cause] occurring after the [statement] [publication] occurs if [such other cause was itself reasonably foreseeable and the [statement] [publication] contributes substantially to producing such [loss] [injury] [or] [damage]] [or] [the resulting [loss] [injury] [or] [damage] was a reasonably foreseeable consequence of the [statement] [publication] and the [statement] [publication] contributes substantially to producing it].