The following sentence contains four parts, marked a, b, c, and d. One of these parts is incorrect. Indicate the letter of the incorrect part.
If it will rain this afternoon, we will have to cancel the picnic.
this afternoon, we will have
to cancel the picnic
The type 1 conditional is used to refer to the present or future where the situation is real. The type 1 conditional refers to a possible condition and its probable result. In these sentences the if clause is in the simple present, and the main clause is in the simple future.
Instead of 'will rain' 'if it rains' in option (b) is the correct use.