Which of the following represents a synthesis reaction?

ac + b → ab + c
a + b + c → abc
abc → a + b + c
ab + cd → ac + bd

The answer to your question is the second one

Explanation:

                                         AC + B → AB + C

This is not the right answer, the reaction shown here is a single replacement reaction in which one element replaces another element that is part of a compound.

                                         A + B + C → ABC

This is the right answer because in synthesis reactions two or more reactants bound to form only one product.

                                          ABC → A + B + C

This answer is incorrect because this is an example of a decomposition reaction in which one reactant forms two or more products.

                                       AB + CD → AC + BD

This is an example of double replacement reaction in which the cations and anions of the reactants are interchanged.

c)red bank

explanation:

red bank is a borough in monmouth county, new jersey, incorporated in 1908 and located on the navesink river, the area's original transportation route to the ocean and other ports.

b. accuracy of the data matters alot more than its number of digits, organization or amount of detail. quantitative observation is more accepted than the qualitative observation.