Answer:
Abril es un mes en primavera.
Step-by-step explanation:
April is a month in spring (translation)
March, April, and May are spring months.
You could use Marzo which is March, May is Mayo in Spanish. I went with the middle month April to be safe but you can use the other 2 months above.
Abril=April
es=is
a=un
mes=month
en=in
primavera=spring.